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15-01-2016
Chemistry

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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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christipetkov christipetkov

15-01-2016

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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