Question

Example 2. Copper oxide was prepared by two
different methods. In one 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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Answer 1

Answer:

In case I, mass of copper = 1.75 g <br> Mass of copper oxide = 2.19 g <br> % of copper in the oxide

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of oxygen

<br> In case II, mass of copper = 1.14 g <br> Mass of copper oxide = 1.43 g <br> % of copper in the oxide

Explanation:

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