During a laboratory investigation, students placed 8.5 g of copper oxide with 21.5 g of hydrogen in a closed container. After the reaction was completed, they measured 29.3 g of copper and 0.7 g of water.
Determine the correct answer. Verify whether the Law of Conservation of Mass is obeyed.
Total mass of reactants = g
Total mass of products = g
Hence, the Law of Conservation of Mass is .