Copper forms two oxides following law ot variable propartions. One gram of each oxide in hydroge...

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Copper forms two oxides following law ot variable propartions. One gram of each oxide in hydrogen gas gave \( 0.799 \mathrm{~g} \) and \( 0.888 \mathrm{~g} \) of the metal respectively, Give the composition of these oxides.
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