2. 0.945 g of a 2.50 g sample of an organic (CxOy) compound is carbon. What is the percentage of OXYGEN in this compound?
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Explanation:
confusing ...
% mass = (mass of element in 1 mole of the compound) / (molar mass of the compound) x 100%
or
mass percent = (mass of solute / mass of solution) x 100%
this if formula
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