What is the mass percent of sulfur in 25 g of so2?
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Molar mass of SO2 is 64g
Mass of sulphur in 64g of SO2 is 32g
Mass of sulphur in 25g of SO2 is 25*32 ÷ 24 = 12.5g
Mass percent = Mass of component ÷ Mass of sample * 100
12.5g ÷ 25g* 100
= 50%
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