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Atoms And Molecules

Question
CBSEENSC9004969

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

Solution

We have given,

Mass of boron = 0.096g

Mass of oxygen = 0.144g

Mass of sample =0.24g

Thus, percentage of boron by weight in the compound = 0.096 x 1000.24 =40%

Thus, percentage of oxygen by weight in the compound =0.144 x 1000.24 =60%