24. 0.920 g of a mixture of metallic copper and copper(II) oxide was heated in a stream of hydrogen until reduction was complete. The residue weighed 0.752 g. What was the percentage of metallic copper in the original mixture with a clear solution

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20-06-2024
Chemistry

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24. 0.920 g of a mixture of metallic copper and copper(II) oxide was heated in a stream of hydrogen until reduction was complete. The residue weighed 0.752 g. What was the percentage of metallic copper in the original mixture with a clear solution

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