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28/12/2020 12:19 pm
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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.
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28/12/2020 12:21 pm
We know that, % of any element in a
Compound = Mass of element/Mass of Compound x 100
% of boron = 0.096/0.24 x 100 = 40%
% of oxygen = 0.144/0.24 x 100 = 60%