Help!! Which of the following equations demonstrates the law of conservation of mass? 2H2 + O2 -> 2H2O2
2K + Cl2 -> 2KCI
2Fe + 302->Fe, O3
C+02->200

The reaction below shows a system in equilibrium. how would a decrease in temperature affect this reaction? a. the rate of formation of the gases would increase. b. the equilibrium of the reaction would shift to the left. c. the equilibrium would shift to cause the gases to sublime into solids. d. the chemicals on the left would quickly form the chemical on the right.