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1 g mixture of cuprous oxide and cupric ...

1 g mixture of cuprous oxide and cupric oxide was quantitatively reduced to `0.839` g of metallic copper. What was the weight of cupric oxide in the original sample ?
`(Cu = 63. 5, O = 16)`.

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The correct Answer is:
`0.55` g
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Knowledge Check

  • A sample of pure calcium weighing 1.35g was quantitatively converted to 1.88g of pure calcium oxide. Atomic mass of calcium would be:

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