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10 April, 08:14

A sample of a compound made entirely from copper and oxygen was found to have a total mass of 0.1431g The mass of the copper In the compound was found to be 0.1271g. Calculate the number of moles of copper in the sample.

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  1. 10 April, 08:24
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    Number of moles of Cu in 63.546 g is 1 mole

    1 / 63.546 = 0.0157366317

    Number of moles in 1 g of Cu is 0.0157366317

    0.0157366317 x 0.1431

    0.002251912 moles will be the answer
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