12. Given the reaction: 3H2(g)+N2(g)2NH3(g)+ heat energy Which of the following would drive the equilibrium in the direction opposite to that of the other four choices? a. Remove ammonia from the reaction. b. Add hydrogen gas. c. Increase the pressure on the system. d. Add nitrogen gas. e. Increase the temperature of the system. 13. Three gases are mixed in a sealed container. The container has 0.3 moles of gas A, 0.4 moles of gas B, and 0.3 moles of gas C. The total pressure of the gases is 660 torr. What is true about the partial pressures of the gases? a. The partial pressure of gas A is 264 torr. b. The partial pressures of gases A and C are each 198 torr. c. The partial pressure of gas C is 220 torr. d. The partial pressure of gas B is 396 torr. e. The partial pressure of gas B is 660 torr