Identify whether the following processes are exothermic or endothermic. cooling and condensing gaseous N2 to form liquid N2 the reaction of Na (s) and Cl2 (g) cooling a soft drink form 25°C to 0°C the reaction of methane and O2 condensation of water vapor at 100°C

How is electrolysis most commonly used to produce an energy source? a - splitting water molecules produces oxygen, which organisms breathe to fuel their bodies. b - splitting water molecules produces hydrogen gas, which is used to power machines through hydrogen fuel cells. c - splitting carbon dioxide molecules produces coal, a form of carbon that can be burned to produce heat. d - splitting carbon dioxide molecules produces natural gas, which can be burned to generate electricity in power plants.