1.375 g CuO was reduced by hydrogen and 1.098 g Cu was obtained. In another experiment, 1.178 g of

1.375 g CuO was reduced by hydrogen and 1.098 g Cu was obtained. In another experiment, 1.178 g of
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1.375 g CuO was reduced by hydrogen and 1.098 g Cu was obtained. In another experiment, 1.178 g of Cu was dissolved in nitric acid and the resulting copper nitrate was converted into CuO by ignition. The weight of CuO formed was 1.476 g. Show that these results prove the law of constant composition

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