Mickie604 Mickie604

02-06-2015
Biology

Answered

compound weighing 115 g contains 68.3 g of carbon, 13.2 g of hydrogen, 15.9 g of nitrogen, and some amount of oxygen. What is the mass percent of oxygen in the compound?

Answer :

lulu1991 lulu1991

15-06-2015

The mass percent means that the mass of this element divide the total mass of the compound. The oxygen amount equals 115-68.3-13.2-15.9=17.6. The mass percent is 17.6/115*100%=15.3%.

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