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Copper oxide was prepared by two differe...

Copper oxide was prepared by two different methods. In case, 1.75 g of the metal gave 2. 19 g of oxide. In the second case, 1.14 g of the metal gave 1.43 g of the oxide, show that the given data illustrate the law of constant proportions.

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To demonstrate that the given data illustrates the law of constant proportions, we will analyze the mass ratios of copper and oxygen in both cases. ### Step-by-Step Solution: **Step 1: Calculate the mass of oxygen in Case 1.** - Given: - Mass of copper (Cu) = 1.75 g - Mass of copper oxide (CuO) = 2.19 g ...
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