When the equation, ___O2 + ___C6 H14 ? ___CO2 + ___H2O is balanced, the coefficient of O2 is:

When the equation, ___O2 + ___C6 H14 ? ___CO2 + ___H2O is balanced, the coefficient of O2 is:

A) 3
B) 10
C) 19
D) 38
E) none of the above

Answer: C

The mixing of sodium metal and chlorine gas would be the type of reaction known as:

The mixing of sodium metal and chlorine gas would be the type of reaction known as:

A) oxidation-reduction
B) gas evolution
C) neutralization
D) precipitation
E) none of the above

Answer: A

Which statement about ozone is TRUE?

Which statement about ozone is TRUE?

A) Ozone normally forms in the upper atmosphere.
B) Chlorofluorocarbons deplete the ozone layer.
C) Ozone protects life on Earth from harmful ultraviolet light.
D) None of the above statements are true.
E) All the of the first three statements are true.

Answer: E

Identify the double displacement reactions among the following:

Identify the double displacement reactions among the following:

1. KCl(aq) + AgNO3(aq) ? AgCl(s) + KNO3(aq)
2. Na2SO4(aq) + BaCl2(aq) ? BaSO4(s) + 2NaCl(aq)
3. H2SO4((aq) + 2NaOH(aq) ? Na2SO4((aq) + 2H2O(l)


A) 1 and 2 only
B) 1 and 3 only
C) 2 and 3 only
D) All of 1, 2, and 3
E) None of 1, 2, and 3

Answer: D

What must be supplied for a decomposition reaction to happen?

What must be supplied for a decomposition reaction to happen?

A) energy
B) heat
C) electrical current
D) light
E) any of the above

Answer: E

What type of reaction is the generic equation AB > A+B?

What type of reaction is the generic equation AB > A+B?

A) synthesis/combination
B) decomposition
C) single displacement
D) double-displacement
E) none of the above

Answer: B