Question

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

August 20, 2024

Answer

Mass of boron = 0.096g (Given)

Mass of oxygen = 0.144g (Given)

Mass of sample = 0.24g (Given)

Thus, percentage of boron by weight in the compound = ${0.096×100\over0.24}$ %

= 40%

Thus, percentage of oxygen by weight in the compound = ${0.144×100\over0.24}$ %

= 60 %

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