Carbon and oxygen combine to form two oxides, carbon monoxide and carbondioxide in which the ratio of the weights of carbon and oxygen is respectively 12:16 and 12:32. These figures illustrate the
Law of multiple proportions
Law of reciprocal proportions
Law of conservation of mass
Law of constant proportions
a. Law of multiple proportions
b. Law of reciprocal proportions
c. Law of conservation of mass
d. Law of constant proportions