Chemistry

Chemistry, 15.05.2021 14:00, abramdent

1.5g of a sample containing chromium (Cr) gave 0.220g of Cr2O3 when suitably oxidized. What is the approximate percentage by mass? The answer is 10 but I don't know how to get the answer.

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1.5g of a sample containing chromium (Cr) gave 0.220g of Cr2O3 when suitably oxidized. What is the a...

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