Asked by michelle

A 230 g sample of a compound contains 136.6 g of carbon, 26.4 g of hydrogen, and 31.8 g of nitrogen. The rest is oxygen. What is the mass percent of oxygen in the compound?
Answered by Anonymous
230-136.6-26.4-31.8 = 35.2

35.2/230 = 0.153 = 15.3%
Answered by :)
A 1.00 g sample of naphthalene (C10H8) contains 0.562 g of hydrogen. What is the mass percent of carbon in the compound
Answered by joshua t
15.3%
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