Read the following reactions. reaction 1: nacl(s) → na+(aq) + cl− reaction 2: caco3(s) → cao(s) + co2(g) which reaction leads to an increase in entropy? only reaction 1 only reaction 2 both reaction 1 and 2 neither reaction 1 nor 2

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?

Which change to the system wood cause the freely-moving piston to lower?

The equation below shows a chemical reaction. a + b + heat —> c + d according to the law of conservation of energy, which statement is true? a. the reactants absorb heat because they have less energy than the products. b. the products release heat because they have more energy than the reactants. c. the reactants generate heat because they have more energy than the products. d. the products require heat to form because they have less energy than the reactants.