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1.375 g of cupric oxide was reduced by h...

`1.375 g` of cupric oxide was reduced by heating in a current of hydrogen and the weight of copper that remained was `1.098 g` In another experiment, `1.179 g` of copper was dissolved in nitric acid and the resulting copper nitrate converted into cupric oxide by ignition. The weight of cupric oxide formed was `1.476 g`. Show that these result illustrate the law of constant composition.

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To demonstrate that the results illustrate the law of constant composition, we will analyze the two experiments step by step. ### Step 1: Analyze the First Experiment 1. **Given Data**: - Mass of cupric oxide (CuO) = 1.375 g - Mass of copper remaining after reduction = 1.098 g 2. **Calculate the Mass of Oxygen**: ...
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