When pressure-volume measurements are made on 1.0 mol of gas at constant temperature, a plot V versus P results in a

When pressure-volume measurements are made on 1.0 mol of gas at constant temperature, a plot V versus P results in a Answer: hyperbol...

Which of the following equations represents "Boyle's law"?

Which of the following equations represents "Boyle's law"? Answer: PV=...

In an open end manometer, one end of a U-tube filled with mercury is attached to a gas-filled container and the other end is open to the atmosphere. If the gas pressure in the container is less than atmospheric pressure

In an open end manometer, one end of a U-tube filled with mercury is attached to a gas-filled container and the other end is open to the atmosphere....

Which is the smallest quantity of pressure?

Which is the smallest quantity of pressure? A) 1 atm B) 1 centimeter of Hg C) 1 mm Hg D) 1 pascal Answer: D. pasc...

Which of the following instruments directly measures the pressure of a gas?

Which of the following instruments directly measures the pressure of a gas? A) spectrometer B) manometer C) polarimeter D) gas chromatograph Answer: B)...

In the following reaction, Cl2 is

In the following reaction, Cl2 is Answer: 2 Rb(s) + Cl2(g) → 2 RbCl(s) the oxidizing age...

What is the oxidation number of the chromium atom in K2Cr2O4?

What is the oxidation number of the chromium atom in K2Cr2O4? Answer: ...

When dissolved in water, LiOH behaves as

When dissolved in water, LiOH behaves as Answer: a base that forms Li+ and OH- io...

What ion is provided when Arrhenius bases dissolve in water

What ion is provided when Arrhenius bases dissolve in water Answer: O...

Which one of the following compounds is soluble in water?

Which one of the following compounds is soluble in water? A) BaSO4 B) AgCl C) Pb(ClO4)2 D) Ca(OH)2 Answer: C) Pb(ClO4...

Write a balanced net ionic equation for the reaction of Pb(NO3)2(aq) with NaI(aq

Write a balanced net ionic equation for the reaction of Pb(NO3)2(aq) with NaI(aq Answer: Pb2+(aq) + 2 I-(aq) → PbI2(...

The reaction Na3PO4(aq) + 3 AgNO3(aq) → Ag3PO4(s) + 3 NaNO3(aq) is best classified as a(n)

The reaction Na3PO4(aq) + 3 AgNO3(aq) → Ag3PO4(s) + 3 NaNO3(aq) is best classified as a(n) Answer: precipitation reactio...

The reaction 2 HNO3(aq) + Ba(OH)2(aq) → Ba(NO3)2(aq) + 2 H2O(l) is best classified as a(n)

The reaction 2 HNO3(aq) + Ba(OH)2(aq) → Ba(NO3)2(aq) + 2 H2O(l) is best classified as a(n) Answer: acid-base neutralization reacti...

A student dissolved 3.00 g of Ca(NO3)2 in enough water to make 100. mL of stock solution. He took 4.00 mL of the solution then diluted it with water to give 275 mL of a final solution. How many grams of NO3- ion are there in the final solution?

A student dissolved 3.00 g of Ca(NO3)2 in enough water to make 100. mL of stock solution. He took 4.00 mL of the solution then diluted it with water...

What is the concentration of HNO3 in the final solution when 70.0 mL of a 6.00 M HNO3 solution is diluted with pure water to a total volume of 0.15 L

What is the concentration of HNO3 in the final solution when 70.0 mL of a 6.00 M HNO3 solution is diluted with pure water to a total volume of 0.15...

Which statement about diluted solutions is false? When a solution is diluted

Which statement about diluted solutions is false? When a solution is diluted A) the concentration of the solution decreases. B) the molarity of the...

What is the concentration of FeBr3 in a solution prepared by dissolving 10.0 g of FeBr3 in enough water to make 275 mL of solution

What is the concentration of FeBr3 in a solution prepared by dissolving 10.0 g of FeBr3 in enough water to make 275 mL of solution Answer: 0.123...

Which of the following statements is false?

Which of the following statements is false? (a) If a molecule contains one polar bond then the molecule must be polar. (b) Nitrogen contributes five...

One of the following questions is false, the rest are true. Please identify the false statement in the enumeration below.

One of the following questions is false, the rest are true. Please identify the false statement in the enumeration below. (a) A pi bond restricts...

Which of the following is incorrect:

Which of the following is incorrect: (a) sigma bonds can result from the overlap of two p-orbitals (b) pi bonds are stronger than sigma bonds. (c)...

Consider the following molecule: CH3−CO−CH−−CH2. Which of the following statements is an outright lie? (Hint: it will help if you draw its Lewis structure, first).

Consider the following molecule: CH3−CO−CH−−CH2. Which of the following statements is an outright lie? (Hint: it will help if you draw its Lewis structure,...

What is the bond order (BO) in He2, He2+? Which one is stable?

What is the bond order (BO) in He2, He2+? Which one is stable? (a) He2: BO = 0, stable, He2+: BO = -1, unstable. (b) He2: BO = 0, unstable, He2+:...

Given the following molecules: ICl4-, ClO4-, H3O+, which of them are associated with the square pyramidal shape?

Given the following molecules: ICl4-, ClO4-, H3O+, which of them are associated with the square pyramidal shape? (a) ICl4- (b) ClO4- (c) ClO4- and...

Identify all the molecules that have a dipole moment: H2O, Cl2, PBr3, I2C−−CI2

Identify all the molecules that have a dipole moment: H2O, Cl2, PBr3, I2C−−CI2 (a) H2O (b) H2O, PBr3, I2C−−CI2 (c) H2O, PBr3 (d) H2O, I2C−−CI2 Answer: H2O,...

How many unpaired electrons would be present on a Be2 2- ion? Would it be paramagnetic or diamagnetic?

How many unpaired electrons would be present on a Be2 2- ion? Would it be paramagnetic or diamagnetic? (a) two, diamagnetic (b) zero, paramagnetic (c)...

Which of the following homonuclear molecules is unstable?

Which of the following homonuclear molecules is unstable? (a) Li2 (b) Be2 (c) C2 (d) B2 (e) F2 Answer: B...

Use the provided molecular orbital diagram to calculate the bond order and the number of unpaired electrons for the molecular ion N2+.

Use the provided molecular orbital diagram to calculate the bond order and the number of unpaired electrons for the molecular ion N2+. (a) 0 unpaired...

What does a bond order of zero represent?

What does a bond order of zero represent? (a) single bond. (b) no bond exists. (c) double bond. (d) triple bond Answer: no bond ord...

Which of the following molecules has a central atom with sp3 hybridization?

Which of the following molecules has a central atom with sp3 hybridization? (a) SF4 (b) BeCl2 (c) NH2−NH2 (d) H2CO (e) BF3 Answer: NH2−N...

Choose the right number set from the answer list below to complete the sentence: The carbon-carbon bond in C2H4 contains σ and π bond(s).

Choose the right number set from the answer list below to complete the sentence: The carbon-carbon bond in C2H4 contains σ and π bond(s). (a) 1, 2 (b)...

Which orbital hybridization is associated with a tetrahedral electron group geometry arrangement?

Which orbital hybridization is associated with a tetrahedral electron group geometry arrangement? (a) sp3 (b) sp2 (c) sp (d) sp3d Answer: ...

What is the hybridization of the oxygen atom in water?

What is the hybridization of the oxygen atom in water? (a) sp (b) sp2 (c) spd (d) sp3 (e) None of the above Answer: s...

According to valence bond theory, which orbitals overlap to form the bond in HBr?

According to valence bond theory, which orbitals overlap to form the bond in HBr? (a) 2s on H and 4s on Br (b) 1s on H and 3p on Br (c) 1s on H and...

What is the molecular geometry of SbCl3?

What is the molecular geometry of SbCl3? (a) trigonal pyramidal (b) tetrahedral (c) trigonal planar (d) T-shaped Answer: trigonal pyram...

Which of the following molecules contains bond angles of 120 degrees?

Which of the following molecules contains bond angles of 120 degrees? (a) H2O (b) H3O+ (c) NH3 (d) NO3- (e) None of the above Answer: NO...

One of the following questions is true; the rest are false. Please identify the true statement in the enumeration below.

One of the following questions is true; the rest are false. Please identify the true statement in the enumeration below. (a) Lone pairs are an exception...

What is the direction of the net dipole moment of the H2S molecule?

What is the direction of the net dipole moment of the H2S molecule? (a) H2S has no net dipole moment. (b) Pointing up and to the left. (c) Pointing...

Classify CF4, NH3, Na3P, and CO2 as polar or nonpolar:

Classify CF4, NH3, Na3P, and CO2 as polar or nonpolar: (a) Polar: NH3, Na3P. Nonpolar: CF4, CO2 (b) Polar: NH3, Na3P, CF4.Nonpolar: CO2 (c) Polar:...

Predict the electron group geometry and molecular structure for boron trichloride, BCl3

Predict the electron group geometry and molecular structure for boron trichloride, BCl3 (a) molecular structure: trigonal planar; electron group geometry:...

Select the correct order of sizes for the different types of electron regions in a molecule:

Select the correct order of sizes for the different types of electron regions in a molecule: (a) lone pair < triple bond < double bond <...

Which of the following molecules HCl , HI , HF, HBr has the most polar bonds?

Which of the following molecules HCl , HI , HF, HBr has the most polar bonds? (a) HCl (b) HI (c) HF (d) HBr Answer: ...

Which of the following species has the greatest bond length?

Which of the following species has the greatest bond length? (a) they are all the same. (b) NO2- (c) NO3- (d) NO+ Answer: NO...

Use the following bond energies to estimate the enthalpy change for the combustion of one mole of methane (CH4). Hint: You will need to write a balanced equation and draw Lewis structures to solve this problem.

Use the following bond energies to estimate the enthalpy change for the combustion of one mole of methane (CH4). Hint: You will need to write a balanced...

Which of the following species is expected to have the largest dissociation energy.

Which of the following species is expected to have the largest dissociation energy. (a) O2- (b) O2 2+ (c) O2 + (d) O2 (e) O2 2- Answer: O2...

Which main group atom would be expected to have the lowest second ionization energy?

Which main group atom would be expected to have the lowest second ionization energy? (Hint: think about shielding, effective nuclear charge, shell...

Which of the following is(are) false?

Which of the following is(are) false? The wavefunction Ψ, (a) is used to obtain the electron trajectory as it orbits in an atom around the nucleus. (b)...

What is the ml degeneracy of the 4f atomic orbital?

What is the ml degeneracy of the 4f atomic orbital? (a) 10 (b) 14 (c) 7 (d) 4 (e) 8 Answer: 7 ...

How many unpaired electrons are in Cr?

How many unpaired electrons are in Cr? (a) 6 (b) 5 (c) 1 (d) 4 (e) 2 Answer: ...

How many unpaired electrons are in an oxygen atom?

How many unpaired electrons are in an oxygen atom? (a) 6 (b) 4 (c) 2 (d) 0 Answer: ...

Carbon has how many lone pairs, single bonds, double bonds, and triple bonds in the most plausible Lewis structure for CO2 ?

Carbon has how many lone pairs, single bonds, double bonds, and triple bonds in the most plausible Lewis structure for CO2 ? (a) 0 triple bonds, 2...

What is the formal charge for each atom in the carbon monoxide molecule?

What is the formal charge for each atom in the carbon monoxide molecule? (a) 0 on C, 0 on O; (b) -1 on C, +1 on O; (c) -2 on C, +2 on O; (d) + 2 on...

A molecular compound with a molar mass of about 28.05 g/mol contains ∼ 85.56% carbon and ∼ 14.4% hydrogen, by mass. How many double bonds, single bonds, and lone electron pairs are in the molecule?

A molecular compound with a molar mass of about 28.05 g/mol contains ∼ 85.56% carbon and ∼ 14.4% hydrogen, by mass. How many double bonds, single bonds,...

Using the electronegativity values in the periodic table below, arrange the following covalent bonds - all commonly found in amino acids - in order of increasing polarity:

Using the electronegativity values in the periodic table below, arrange the following covalent bonds - all commonly found in amino acids - in order...

How many non-shared electrons on N and how many on O in the most plausible Lewis structure for NO (nitrogen monoxide)?

How many non-shared electrons on N and how many on O in the most plausible Lewis structure for NO (nitrogen monoxide)? (a) 5 on N, 4 on O; (b) 2 on...

Which of the following molecules and molecular ions does not exhibit resonance?

Which of the following molecules and molecular ions does not exhibit resonance? (a) SO3 (b) O3 (c) OCN- (d) CCl4 (e) CO3 2- Answer: CC...

Select from the list below the correct formal charges for the atoms in the Lewis structure of NO3-(nitrate ion).

Select from the list below the correct formal charges for the atoms in the Lewis structure of NO3-(nitrate ion). (a) 0 on all atoms (b) -1 on doubly...

A molecule contains the following elements; C, Cl, F, O, H. Which element would be the central atom in the Lewis structure?

A molecule contains the following elements; C, Cl, F, O, H. Which element would be the central atom in the Lewis structure? (a) O (b) F (c) Cl (d)...

Which of the following atoms can expand its octet as a central atom in a valid Lewis structure?

Which of the following atoms can expand its octet as a central atom in a valid Lewis structure? (a) Si (b) Al (c) S (d) B (e) N Answer: ...

Which of the following combinations would make an ionic compound?

Which of the following combinations would make an ionic compound? (a) silicon and oxygen (b) phosphorus and chlorine (c) magnesium and sulfur (d)...

Predict the charge on the monatomic ions formed from the following atoms in binary ionic compounds: i) P, ii) Mg, iii) Al, iv) O, v) Cl

Predict the charge on the monatomic ions formed from the following atoms in binary ionic compounds: i) P, ii) Mg, iii) Al, iv) O, v) Cl (a) P2-; Mg2+;...

Which one of the following substances contains ionic bonds?

Which one of the following substances contains ionic bonds? (a) CO2 (b) HC2H3O2 (c) N2O4 (d) C4H10 (e) None of the above Answer: none of the...

Atoms of which group in the periodic table have a valence shell electron configuration of ns2np3?

Atoms of which group in the periodic table have a valence shell electron configuration of ns2np3? (a) group 5A(15). (b) group 3A(13). (c) several...

Arrange the three following elements: N,B,C, in order of decreasing ionization energy.

Arrange the three following elements: N,B,C, in order of decreasing ionization energy. (a) B, C, N. (b) N, C, B. (c) N, B, C. (d) C, B, N. (e) B,...

Arrange the following elements in the order of increasing atomic radius: Si, Al, Cl, Li

Arrange the following elements in the order of increasing atomic radius: Si, Al, Cl, Li (a) Si < Al < Cl < Li. (b) Cl < Si < Al <...

Select the ion set where all ions are isoelectronic with argon.

Select the ion set where all ions are isoelectronic with argon. (a) Sc3+, N3- (b) N3-, Se2- (c) K+, Ca2+, Sc3+. (d) Ca2+, Se2-, Sc3+. (e) Se2-, Sc3+. Answer: (c)...

What element has the following electronic configuration: [Ar]4 s23 d7?

What element has the following electronic configuration: [Ar]4 s23 d7? (a) Cr (b) Cu (c) Cl (d) Co (e) Cm Answer: ...

In an atom, how many electrons can have (n = 2, l = 0) quantum numbers or subshell designation ?

In an atom, how many electrons can have (n = 2, l = 0) quantum numbers or subshell designation ? Answer: ...

An FM radio station broadcast at a frequency of 95.1 MHz. what is the wavelength of these radio waves?

An FM radio station broadcast at a frequency of 95.1 MHz. what is the wavelength of these radio waves? Answer: 3.15...

At 298.15K all of the following substances have a standard free energy of formation of zero except?

At 298.15K all of the following substances have a standard free energy of formation of zero except? Answer: B...

Hydrogen gas may be prepared by electrolysis in water. Predict delta RH and delta RS

Hydrogen gas may be prepared by electrolysis in water. Predict delta RH and delta RS Answer: Delta RH >0, and Delta RS>...

When a real gas is compressed from low pressure to a higher pressure its temperature increases. Predict the signs of delta h and delta S?

When a real gas is compressed from low pressure to a higher pressure its temperature increases. Predict the signs of delta h and delta S? Answer: Delta...

For which of the following reactions will entropy of the system decrease?

For which of the following reactions will entropy of the system decrease? Answer: 2NO2-> N2O...

All of the following processes lead to an increase in entropy except?

All of the following processes lead to an increase in entropy except? Answer: Decreasing the volume of a ga...

The following processes occurs spontaneously at 25C. which are endothermic?

The following processes occurs spontaneously at 25C. which are endothermic? Answer: 1. NH4NO3 dissolving in water 2. Expansion of real gas into...

An aqueous solution contains 0.010 M BR and 0.010M I-. What are the concentrations of Ag and I?

An aqueous solution contains 0.010 M BR and 0.010M I-. What are the concentrations of Ag and I? Answer: Ag= 5.4 X 10 -11, I-= 1.6 X 10 -...

What mass of KCL must be added to 1L of 0.0180 Pb to initiate precipitation of PbCL2?

What mass of KCL must be added to 1L of 0.0180 Pb to initiate precipitation of PbCL2? Answer: 2.3...

What is the molar solubility of BaF2 in 0.033M KF?

What is the molar solubility of BaF2 in 0.033M KF? Answer: 1.7 X10-4 mol/...

The solubility of PBI2 in water at 25C. What is the ksp for PBI2

The solubility of PBI2 in water at 25C. What is the ksp for PBI2 Answer: 9.7 X 10-...

A 25ml sample of 0.400mNH3 is titrations with 0.4M HCL. What is the ph at the equivalence point?

A 25ml sample of 0.400mNH3 is titrations with 0.4M HCL. What is the ph at the equivalence point? Answer: 4.9...

Which of the following combinations would be the best to buffer an aqueous solution of ph of 9?

Which of the following combinations would be the best to buffer an aqueous solution of ph of 9? Answer: NH4+ and NH...

What conditions are met at the equivalence point of the titration of monoprotic weak acid with a strong acid?

What conditions are met at the equivalence point of the titration of monoprotic weak acid with a strong acid? Answer: 1. Moles of acid added fro...

An acid base equilibrium system is created by dissolving 0.50 mol CH3CO2H in water to a volume of 1L. What would be the effects of adding 0.50 mol of CH3CO2- to the solution?

An acid base equilibrium system is created by dissolving 0.50 mol CH3CO2H in water to a volume of 1L. What would be the effects of adding 0.50 mol of...

Which of the following molecules or ions is the strongest acid?

Which of the following molecules or ions is the strongest acid? Answer: CF3CO2...

All of the following compounds are acids contains chlorine. Which is the weakest acid?

All of the following compounds are acids contains chlorine. Which is the weakest acid? Answer: HCL...

What is the pH of 0.50M aqueous ethylamine?

What is the pH of 0.50M aqueous ethylamine? Answer: 12.1...

What is the ph of a 0.25M aqueous acetate ion?

What is the ph of a 0.25M aqueous acetate ion? Answer: 9.0...

Given the following equilibrium constants (given a Ka, KB, and Kw), determine the equilibrium, constant at 25C? (HSO4+CH3CO2= SO4+CH3CO2)

Given the following equilibrium constants (given a Ka, KB, and Kw), determine the equilibrium, constant at 25C? (HSO4+CH3CO2= SO4+CH3CO2) Answer: 6.7...

At 25C all of the following ionic compounds produce a basic aqueous solution except?

At 25C all of the following ionic compounds produce a basic aqueous solution except? Answer: NaHSO...

An aqueous solution with a pH of 10.06 is diluted from 1L-2L. What is the new pH?

An aqueous solution with a pH of 10.06 is diluted from 1L-2L. What is the new pH? Answer: 10.9...

Assume that the following endothermic (C+H2O-> H2+CO) chemical reaction is at equilibrium. What statements are correct?

Assume that the following endothermic (C+H2O-> H2+CO) chemical reaction is at equilibrium. What statements are correct? Answer: Increasing...

If 0.64mol PCl5 is placed in a 1L flask and allowed to reach equilibrium. What is the final concentration?

If 0.64mol PCl5 is placed in a 1L flask and allowed to reach equilibrium. What is the final concentration? Answer: 0.36...

A sealed tube is prepared with 1.66atm PCl5 at 500K. The PCl5 decomposes until equilibrium is established, and equilibrium pressure is 2.28atm. Calculate ksp

A sealed tube is prepared with 1.66atm PCl5 at 500K. The PCl5 decomposes until equilibrium is established, and equilibrium pressure is 2.28atm. Calculate...

Freezing point depression constant for water is -1.86C. At what temperature will a solution containing 12gKNO3 and 55g H2O begin to freeze?

Freezing point depression constant for water is -1.86C. At what temperature will a solution containing 12gKNO3 and 55g H2O begin to freeze? Answe...

What mass of ethylene glycol, when mixed with 225gH20 will reduce equilibrium, vapor pressure of H20 from 1 atm to 2atm at 100c?

What mass of ethylene glycol, when mixed with 225gH20 will reduce equilibrium, vapor pressure of H20 from 1 atm to 2atm at 100c? Answer: 194...

Henry's law constant for N2 in water at 25C is 6.0X 10-4 mol. What is the equilibrium concentration of N2 in water with partial pressure of 586 mmhg

Henry's law constant for N2 in water at 25C is 6.0X 10-4 mol. What is the equilibrium concentration of N2 in water with partial pressure of 586 mmhg Answer: 4.6...

Concentrated aqueous solution of HFL is 28.9M and density is 1.15 g/ml. What is the molal?

Concentrated aqueous solution of HFL is 28.9M and density is 1.15 g/ml. What is the molal? Answer: 50.5...

What statement is correct about the attraction of ions to polar molecules?

What statement is correct about the attraction of ions to polar molecules? 1. Energy of attraction is inversely related to distance between ion/ molecule 2....

Compare 2dimensional motion to 1dimensional motion.

Compare 2dimensional motion to 1dimensional motion. Answer: When motion is on a firm surface (eg. a road) it is one dimensional because the motion...

Describe negative acceleration and give an example using gravity.

Describe negative acceleration and give an example using gravity. Answer: If acceleration is in the direction opp to the velocity, then there...

The electron configuration of a ground-state Co atom is

The electron configuration of a ground-state Co atom is a) [Ar]4s24d7 b) [Ar]4s13d5 c) 1s22s22p63s23d9 d) [Ar]4s23d7 e) [Ne]3s23d7 Answer: d)...

Which ground-state atom has an electron configuration described by the following orbital diagram?

Which ground-state atom has an electron configuration described by the following orbital diagram? 4s 3d 4p a) phosphorus b) germanium c) selenium d)...

Who is credited with discovering the atomic nucleus?

Who is credited with discovering the atomic nucleus? a) Dalton and his atomic theory b) Millikan and the oil drop experiment c) Thomson and cathode...

Of the following atoms, which contain(s) ten 3d electrons in the ground state

Of the following atoms, which contain(s) ten 3d electrons in the ground state a) Zn b) Cu c) Cd d) a and b are correct e) a and c are correct ANSWER:...

A sample of iron weighing 6.09 g contains how many moles of iron atoms?

A sample of iron weighing 6.09 g contains how many moles of iron atoms? a) 0.0480 moles b) 0.0558 moles c) 0.109 moles d) 0.917 moles e) 9.17 moles Answer: c)...

Consider the Bohr model of the hydrogen atom. When an electron moves from the n = 1 orbit to the n 1 orbit to the n = 6 orbit, which of the following statements is true?

Consider the Bohr model of the hydrogen atom. When an electron moves from the n = 1 orbit to the n 1 orbit to the n = 6 orbit, which of the following...

Infrared radiation from the sun has a wavelength of 6200 nm. Calculate the energy of one photon of that radiation.

Infrared radiation from the sun has a wavelength of 6200 nm. Calculate the energy of one photon of that radiation. a) 4.l × 10-39 J b) 3.2 × 10-26...

What is the frequency of light having a wavelength of 360 nm?

What is the frequency of light having a wavelength of 360 nm? a) 8.3 × 1014 s-1 b) 108 s-1 c) 1.2 × 10-6 s-1 d) 1.2 × 10-15 s-1 e) 8.3 × 105 s-1 Answer: a)...

What is defined as the number of waves that pass through a particular point in one second?

What is defined as the number of waves that pass through a particular point in one second? a) light b) amplitude c) magnitude d) wavelength e) frequency Answer: e)...

How many atoms are in 31.3 g of nickel, Ni?

How many atoms are in 31.3 g of nickel, Ni? a) 1.13 × 1024 atoms b) 1.48 × 1025 atoms c) 2.44 × 1022 atoms d) 3.21 × 1023 atoms e) 6.98 × 1021 atoms Answer: d)...

Which of these elements is chemically similar to oxygen?

Which of these elements is chemically similar to oxygen? a) sulfur b) calcium c) iron d) nickel e) potassium Answer: a) sulf...

The alkali metal elements are found in _______ of the periodic table.

The alkali metal elements are found in _______ of the periodic table. a) Group 1A b) Group 2A c) Group 3A d) Period 7 e) Period 1 Answer: a)...

Atoms X, Y, Z, and R have the following nuclear compositions: Which two are isotopes?

Atoms X, Y, Z, and R have the following nuclear compositions:Which two are isotopes? a) X & Y b) X & R c) Y & R d) Z & R e) X &...

The radii of the species, Te, Te+, and Te- decrease in the following order:

The radii of the species, Te, Te+, and Te- decrease in the following order: a) Te+ > Te > Te- b) Te+ > Te- > Te c) Te > Te- > Te+ d)...

What is the electron configuration of Fe2+?

What is the electron configuration of Fe2+? a) [Ar]3d44s2 b) [Ar]3d54s1 c) [Ar]3d6 d) [Ar]3d64s2 e) [Ar]3d64s1 Answer: c) [Ar]3...

Which of the following atoms has the largest atomic radius?

Which of the following atoms has the largest atomic radius? a) Be b) Sr c) Sn d) Ne e) Xe Answer: b) ...

Which of the following atoms has the lowest first ionization energy?

Which of the following atoms has the lowest first ionization energy? a) Li b) Na c) F d) O e) C Answer: b) ...

Lithium forms compounds which are used in dry cells and storage batteries and in high-temperature lubricants. It has two naturally occurring isotopes, 6Li (isotopic mass = 6.015121 amu) and 7Li (isotopic mass = 7.016003 amu). Lithium has an atomic mass of 6.9409 amu. What is the percent abundance of lithium-6?

Lithium forms compounds which are used in dry cells and storage batteries and in high-temperature lubricants. It has two naturally occurring isotopes,...

Which of the following combinations of quantum numbers would not be possible for an electron in an atom? n l ml ms

Which of the following combinations of quantum numbers would not be possible for an electron inan atom?n l ml ms  a) 1 0 0 +1/2 b) 3 2 -1 -1/2 c)...

How many electrons in an atom can have the quantum numbers n = 4, l = 2?

How many electrons in an atom can have the quantum numbers n = 4, l = 2? a) 2 b) 5 c) 10 d) 18 e) 6 Answer: c) ...

An atom of the isotope sulfur-31 consists of how many protons, neutrons, and electrons? (p = proton, n = neutron, e = electron)

An atom of the isotope sulfur-31 consists of how many protons, neutrons, and electrons?(p = proton, n = neutron, e = electron) a) 15 p, 16 n, 15 e b)...

What is the elemental symbol for the isotope 18 40X?

What is the elemental symbol for the isotope1840X? a) Ti b) Ar c) Mg d) Zr e) Kr Answer: b) ...

Which of the following metric relationships is incorrect?

Which of the following metric relationships is incorrect? a) 1 liter = 1000 milliliters b) 1 kilogram = 103 grams c) 1 microgram = 106 grams d) 1...

What is the approx molar mass of a molecular solute in 300 grams of the solute in 1000 grams of water causes the solution to have a boiling point of 101°C?

What is the approx molar mass of a molecular solute in 300 grams of the solute in 1000 grams of water causes the solution to have a boiling point of...

What is the boiling point of a solution that contains 30 grams of FeCl3 in 2000 grams of water?

What is the boiling point of a solution that contains 30 grams of FeCl3 in 2000 grams of water? Answer: 100.189...

What is the freezing point of a solution of .5 mol of LiBr in 500 grams of water?

What is the freezing point of a solution of .5 mol of LiBr in 500 grams of water? Answer: -3.72...

To which of the following variables is change in boiling point directly proportional?

To which of the following variables is change in boiling point directly proportional? Answer: molality of soluti...

What is the number of kilograms of solvent in a .70 molal solution containing 5 grams of solute?

What is the number of kilograms of solvent in a .70 molal solution containing 5 grams of solute? Answer: .24...

What is the molality of a solution containing 8 grams of solute in .5 kg solvent?

What is the molality of a solution containing 8 grams of solute in .5 kg solvent? Answer: .6...

What is the mole fraction of ethanol in a solution of 3 moles of ethanol and 5 moles of water?

What is the mole fraction of ethanol in a solution of 3 moles of ethanol and 5 moles of water? Answer: 0...

A solute depresses the freezing point because the solute?

A solute depresses the freezing point because the solute? Answer: disrupts crystal formation of the solve...

Colligative properties depend upon the?

Colligative properties depend upon the? Answer: number of solute particles in a soluti...

Which of the following is a colligative property of a solution?

Which of the following is a colligative property of a solution? Answer: boiling point elevati...

The volume of alcohol present in 620 mL of a 40% (v/V0 solution of alcohol is?

The volume of alcohol present in 620 mL of a 40% (v/V0 solution of alcohol is? Answer: 248...

If the percent (mass/mass) for a solute is 4% and the mass of the solution in 200g, what is the mass of solute in solution?

If the percent (mass/mass) for a solute is 4% and the mass of the solution in 200g, what is the mass of solute in solution? Answer: 8....

If 2.9 mL of 6 M HCl is used to make a 500 mL solution, what is the molarity of the dilute solution?

If 2.9 mL of 6 M HCl is used to make a 500 mL solution, what is the molarity of the dilute solution? Answer: .02...

The volume of 6M HCl needed to make 319mL of 6.8M HCl is?

The volume of 6M HCl needed to make 319mL of 6.8M HCl is? Answer: 362mL ...

Which of the following in unchanged when a solution is diluted by the addition of solvent?

Which of the following in unchanged when a solution is diluted by the addition of solvent? Answer: number of moles of a solu...

What mass of sucrose, is needed to make 500 mL of a .200M solution?

What mass of sucrose, is needed to make 500 mL of a .200M solution? Answer: 34.2...

What is the molarity of a solution containing 56 grams of solute in 959mL of solutions?

What is the molarity of a solution containing 56 grams of solute in 959mL of solutions? Answer: 2.2...

Which of the following operations yields the number of moles of solute?

Which of the following operations yields the number of moles of solute? Answer: molarity x moles of soluti...

In which of the following is the solution concentration expressed in terms of molarity?

In which of the following is the solution concentration expressed in terms of molarity? Answer: 10mol/...

What is the concentration of a solution?

What is the concentration of a solution? Answer: a measure of the amount of solute is a specified quantity of solve...

To increase the solubility of a gas at constant temp from 1.2g/l at 1.4 atm, to 2.3g/l, the pressure would have to be increased to?

To increase the solubility of a gas at constant temp from 1.2g/l at 1.4 atm, to 2.3g/l, the pressure would have to be increased to? Answer: 2.7 a...

What happens to the solubility of a gas in a liquid if the partial pressure of the gas above the liquid decreases?

What happens to the solubility of a gas in a liquid if the partial pressure of the gas above the liquid decreases? Answer: the solubility decreas...

If the solubility of a particle solute is 10/100 at 20°c, which of the following concentrations would represent a supersaturated solution of that solute?

If the solubility of a particle solute is 10/100 at 20°c, which of the following concentrations would represent a supersaturated solution of that solute? Answer:...

Which phrase correctly describes the effect of pressure on the solubility of a gas in a liquid?

Which phrase correctly describes the effect of pressure on the solubility of a gas in a liquid? Answer: unrelated to the pressure of face above the...

Which of the following generally occurs as temp increases?

Which of the following generally occurs as temp increases? Answer: solubility of a solid solute increas...

Which of the following substance is less soluble in hot water than in cold?

Which of the following substance is less soluble in hot water than in cold? Answer: NaC...

Which of the following factors affect solubility?

Which of the following factors affect solubility? Answer: temo and pressur...

How does shaking or stirring a mixture of solute and solvent affect a solution?

How does shaking or stirring a mixture of solute and solvent affect a solution? Answer: it increase the rate of dissolvin...

What is the maximum amount of KCl that can dissolve in 200 g of water a 20C?

What is the maximum amount of KCl that can dissolve in 200 g of water a 20C? Answer: 68...

Which of the following usually makes a substance dissolve faster in a solvent?

Which of the following usually makes a substance dissolve faster in a solvent? Answer: agitating the solutio...

Rank the bonds in each set in order of decreasing bond length and decreasing bond strength.

Rank the bonds in each set in order of decreasing bond length and decreasing bond strength.  A) S-F, S-Br, S-Cl B) C=O, C-O, C-=C A) Bond Length...

The electronic configuration structure 1s2 2s2 2p6 3s2 3p6 4s2 3d8 ?

The electronic configuration structure 1s2 2s2 2p6 3s2 3p6 4s2 3d8 ? Answer: ...

In the electron configuration [Ar] 4s2 3d10 4p4 which are valence electrons?

In the electron configuration [Ar] 4s2 3d10 4p4 which are valence electrons? Answer: Both 4s2 and 4p4 If the middle is full than the outside electrons...

Rank each set of ions in order of decreasing size and explain your ranking

Rank each set of ions in order of decreasing size and explain your ranking A) Ca+2, Sr+2, Mg+2 B)K+, S2-, Cl- C) Au+, Au+3, Answer: A) Mg+2 <...

Which of the following is paramagnetic

Which of the following is paramagnetic A) Zn [Ar]3d10 4s2 B) V [Ar] 3d3 4s2 C) Sr [Kr]5s2 D) Kr [Ar] 3d10 4s2 4p6 E) Ca [Ar] 4s2 Answer: B)...

Use condensed electron configuration to write the reaction for the formation of each transition metal ion, and predict whether the ion is paramagnetic or diamagnetic.

Use condensed electron configuration to write the reaction for the formation of each transition metal ion, and predict whether the ion is paramagnetic...

Select the most acidic compound from the following:

Select the most acidic compound from the following: A) SO4 B) Al2O3 C) CaO D) PbO E) H2O Answer: A) SO...

The most basic oxides are formed from the elements found in the _________ region of the periodic table.

The most basic oxides are formed from the elements found in the _________ region of the periodic table. Answer: Lower Le...

Select the element with the greatest metallic behavior

Select the element with the greatest metallic behavior A) Li B) Ca C) Al D) Pb E) Cs Answer: E) ...

When comparing the successive ionization energies of an element, an unusually big increase in ionizations is seen when?

When comparing the successive ionization energies of an element, an unusually big increase in ionizations is seen when? When the first core electron...

Which of the following elements has the second largest ionization energies? IE2

Which of the following elements has the second largest ionization energies? IE2 A) Li B) B C) O D) F E) Na Answer: A) L...

Identify the element of period 2 which has the following successive ionization energies in Kj/mol.

Identify the element of period 2 which has the following successive ionization energies in Kj/mol.  IE1 1314 IE2 3389 IE3 5289 IE4 7471 IE5 10992...

Elements with ________ first ionization energies and ________ electron affinities generally form cations.

Elements with ________ first ionization energies and ________ electron affinities generally form cations. Answer: Low, Slightly negativ...

Rank the elements in each of the following in each of the following sets in order of decreasing IE1.

Rank the elements in each of the following in each of the following sets in order of decreasing IE1.  A) Kr, He, Ar B) Sb, Te, Sn C) K, Ca, Rb D)...

Rank each set of main-group elements in order of decreasing atomic size?

Rank each set of main-group elements in order of decreasing atomic size?  A) Ca, Mg, Sr B) K, Ga, Ca C) Br, Rb, Kr D) Sr, Ca, Rb Answer: A)...

How many valence electrons are there in an atom with the electron configuration [noble gas] ns2 (n-1)d8?

How many valence electrons are there in an atom with the electron configuration [noble gas] ns2 (n-1)d8? A) 2 B) 6 C) 8 D) 10 E) None Answer: Valence...

Give the full and condensed electron configurations, partial orbital diagrams showing valence electrons only and number of inner electrons for the following elements

Give the full and condensed electron configurations, partial orbital diagrams showing valence electrons only and number of inner electrons for the following...

The effective nuclear charge for an atom is less than the actual nuclear charge due to...?

The effective nuclear charge for an atom is less than the actual nuclear charge due to...? Answer: Shieldin...

The electronic configuration structure 1s2 2s2 2p6 3s2 3p6 4s2 3d8 ?

The electronic configuration structure 1s2 2s2 2p6 3s2 3p6 4s2 3d8 ? Answer: N...

Select the correct configuration for Cu (Z = 29)

Select the correct configuration for Cu (Z = 29) Answer: [Ar] 4s1 3d1...

Select the correct set quantum numbers (n, l, m, spin) for the highest energy electron in the ground state of tin (Z = 50)

Select the correct set quantum numbers (n, l, m, spin) for the highest energy electron in the ground state of tin (Z = 50) Answer: 5, 1, (-1,0,1)...

Select the correct set of quantum numbers (n, l, m, spin) for the highest electron in the ground state of potassium (z = 19)

Select the correct set of quantum numbers (n, l, m, spin) for the highest electron in the ground state of potassium (z = 19) Answer: 4, 0, 0,...

In a single atom, what is the maximum number of electrons which can have quantum number n = 4?

In a single atom, what is the maximum number of electrons which can have quantum number n = 4? Answer: 32 (16 X 2 Pauli's principl...

Write a set of quantum numbers for the third electron and a set for the eighth electron of an F atom.

Write a set of quantum numbers for the third electron and a set for the eighth electron of an F atom. F (Z = 9) 1S2 2S2 2P5 Answer: 3rd electron...

What is the correct set of quantum numbers for an electron in a 3p orbital?

What is the correct set of quantum numbers for an electron in a 3p orbital? Answer: n = 3 l = 1 m = -1, 0, ...

What is the correct set of quantum numbers for an electron in a 5f orbital?

What is the correct set of quantum numbers for an electron in a 5f orbital? Answer: n =5 l = 3 m = -3-+...

What is the correct set of quantum numbers for an electron in a 3d orbital? What is n, l, and m?

What is the correct set of quantum numbers for an electron in a 3d orbital? What is n, l, and m? Answer: n = 3 l = 2 m = -2-...

Give the name, magnetic quantum numbers and number of orbitals for each of the sub-levels with the following quantum numbers.

Give the name, magnetic quantum numbers and number of orbitals for each of the sub-levels with the following quantum numbers. a) n = 3 l = 2 b) n...

What values of angular momentum (l) and magnetic (m), quantum numbers are allowed for a principle quantum number (n) of 3? How many orbitals are allowed for n=3?

What values of angular momentum (l) and magnetic (m), quantum numbers are allowed for a principle quantum number (n) of 3? How many orbitals are allowed...

An electron moving near an atomic nucleus has a speed of 6 X 10^6 m/s +- 1%. What is the uncertainty in its position (delta X) Mass is 9.11 X 10^-31 kg.

An electron moving near an atomic nucleus has a speed of 6 X 10^6 m/s +- 1%. What is the uncertainty in its position (delta X) Mass is 9.11 X 10^-31...

Find the de broglie wavelength of an electron with a speed of 1.00 X 10^ 6 m/s (electron mass = 9.11 X 10^-31 kg; h = 6.626 X 10^-34 kg m^2/sec).

Find the de broglie wavelength of an electron with a speed of 1.00 X 10^ 6 m/s (electron mass = 9.11 X 10^-31 kg; h = 6.626 X 10^-34 kg m^2/sec). Answer: 7.27...