Which law is supported by each of the following statements? (The laws are: conservation of mass, definite proportion, and multiple proportions.)
a) In hydrogen peroxide there are 15.9 grams of oxygen per 1.00 g of hydrogen and in water there are 7.94 grams of oxygen per 1.00 g of hydrogen.
b) The total mass of reactants (starting materials) is the same as the total mass of products when a chemical reaction is carried out in a closed system.
c) In any sample of a given compound, the mass proportion of each element is the same.