Chemistry
madi26
23

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

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(1) Answers
KeriDrungo387

mass of oxygen = 230g - (136,6g + 26,4g + 31,8g) = 35,2g If 230g ---- is ----- 100%                   so 35,2g  ---- is ------ %O %O = (35,2g*100%) / 230g = 15,3%

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