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22 July, 22:36

What is the percent composition of compound that has a total mass of 63.9 g that contains 51.0 g Cu and 12.9 g O?

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  1. 22 July, 22:56
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    79.1% Cu

    20.2% O

    You divide each mass of the element by the total mass and times it by 100 to make it percent.
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