a o .24g sample of compound of oxygen and boron was found by analysis to contain 0.096g of boron and o.144g of oxygen calculate the percentage composition of the compound by weight .....
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mass of compound = 0.24 g
mass of oxygen = 0.144 g
mass of boron = 0.096 g
percentage of oxygen = 0.144/0.24 * 100 % = 60%
percentage of boron= 0.096/0.24 * 100 % = 40%
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