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OpenStudy (anonymous):
In the formula, CH4, the percent composition of all elements is: a. 75% C, 25% H b. 25% C, 75% H c. 81% C, 19% H d. 20% C, 80% H
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OpenStudy (anonymous):
there are 5 atoms 1/5 and 4/5, so 20 and 80 percent
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