2.16 grams of Cu on reaction with HNO_(3) followed by ignition of the nitrate gave 2.7 gm of copper oxide. In another experiment 1.15 gm of copper oxide upon reduction with hydrogen gave 0.92 gm of copper. This data illustrate the law of

2.16 grams of Cu on reaction with HNO_(3) followed by ignition of the

1.	2.16 grams of Cu on reaction with HNO_(3) followed by ignition of the nitrate gave 2.7 gm of copper oxide. In another experiment 1.15 gm of copper oxide upon reduction with hydrogen gave 0.92 gm of copper. This data illustrate the law of
Answer» MULTIPLE Proportions Definite Proportions Reciprocal proportions Conservation of mass Answer :B