1. Given the following equation, explain how the equilibrium would shift for each of the following scenarios:

4HCl(g) + O2(g) <===> 2Cl2(g) + 2H2O(g)

A: amount of O2 is decreased
B: water is removed
C: HCl is added

2. (3 points) When 825 J of heat is added to a 84.1 g of an unknown metal, the temperature of the metal increases from 22oC to 88oC. Calculate the specific heat of this metal. Show all work.

3. List 4 things that can increase the rate of a reaction.

4. Identify each of the following as exothermic or endothermic:

A: a chemical cold pack
B: steam condensing to liquid water
C: 2Cl2 + 7O2 + 130kcal --> 2Cl2O7
D: H= -355 kJ
E: ice melting