Part 2: Dehydration of a hydrate salt 5. 6. Explain why a change in the mass of the chemical occurred during heating. Cite your data. Was the law of conservation of mass followed in this experiment? What else must be measured to demonstrate that this reaction followed the law of conservation of mass? Cite your data. Part 3: Model kits 7. Which mass difference was bigger: the unbalanced or the balanced? Explain your answer in terms of the law of conservation of mass. 4

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