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  • A 0.24g sample of compound of oxygen and boron was found by analysis to contain 0.096g of boron and 0.144g of oxygen. calculate the percentage composition of the compound by weight.

A 0.24g sample of compound of oxygen and boron was found by analysis to contain 0.096g of boron and 0.144g of oxygen. calculate the percentage composition of the compound by weight.

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These data is given :
Mass of boron = 0.096g

Mass of oxygen = 0.144g

Mass of sample = 0.24g

% of composition by weight =  (weight of substance/ Total weight of sample ) X 100

Thus, percentage of boron by weight in the compound =( 0.0960 × 100)/0.24 = 40%

Thus, percentage of oxygen by weight in the compound = (0.144× 100)/ 0.24 = 60 %

Posted by

sudhir.kumar

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