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OpenStudy (anonymous):
how to determine percent composition of a compound?
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OpenStudy (anonymous):
If you mean mathematically, you have to add the atomic weights, then divide them into the atomic weight of each element. C O2 = 12 + 2x16 = 12+32 = 44, C is (12/44) x 100% and O2 is (32/44) x 100% by weight.
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