What equals the molar mass of an element? a)The atomic mass of the element expressed in grams

b)The atomic number of the element expressed in grams

c)The mass number of the most common isotope of the element expressed in grams

d)None of the above

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.