What is the volume of 28.0 g of nitrogen gas at STP?

What is the volume of 28.0 g of nitrogen gas at STP?

A) 33.6 L
B) 11.2 L
C) 22.4 L
D) 44.8 L
E) none of the above

Answer: C

What is the pressure of a 1.0 L flask containing 0.60 g of He at 25°C? (R= 0.0821 L atm/ mol K)

What is the pressure of a 1.0 L flask containing 0.60 g of He at 25°C? (R= 0.0821 L atm/ mol K)

A) 98 atm
B) 3.7 atm
C) 7.3 atm
D) 15 atm
E) none of the above

Answer: B

What is the molecular weight of a gas if a 21.0 g sample has a pressure of 836 mm Hg at 25.0°C in a 2.00 L flask? (R= 0.0821 L atm/ mol K)

What is the molecular weight of a gas if a 21.0 g sample has a pressure of 836 mm Hg at 25.0°C in a 2.00 L flask? (R= 0.0821 L atm/ mol K)

A) 243 amu
B) 1.89 amu
C) 234 amu
D) 11.1 amu
E) none of the above

Answer: C

What is the volume (in liters) of 1.00 mole of krypton gas that has a pressure of 1140 mm Hg and a temperature of 25.0°C? (R= 0.0821 L atm/ mol K)

What is the volume (in liters) of 1.00 mole of krypton gas that has a pressure of 1140 mm Hg and a temperature of 25.0°C? (R= 0.0821 L atm/ mol K)

A) 1.37
B) 16.3
C) 0.0215
D) 0.00180
E) none of the above

Answer: B

If the number of moles of a gas initially contained in a 2.10 L vessel is doubled, what is the final volume of the gas in liters? (Assume the pressure and temperature remain constant.)

If the number of moles of a gas initially contained in a 2.10 L vessel is doubled, what is the final volume of the gas in liters? (Assume the pressure and temperature remain constant.)

A) 6.30
B) 1.05
C) 4.20
D) 8.40
E) none of the above

Answer: C

A rigid cylinder contains 2.00 liters of gas at a temperature of 25°C. If the pressure of this gas is changed from 0.500 atmospheres to 1.50 atmospheres, what will be the new temperature (in Kelvin, reported to three significant figures) of the gas? (The volume is constant.)

A rigid cylinder contains 2.00 liters of gas at a temperature of 25°C. If the pressure of this gas is changed from 0.500 atmospheres to 1.50 atmospheres, what will be the new temperature (in Kelvin, reported to three significant figures) of the gas? (The volume is constant.)

A) 99.3 K
B) 75.0 K
C) 8.33 K
D) 894 K
E) none of the above

Answer: D