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Empirical and Molecular Formula

How many mole...

Question

How many moles of H2SO4 contains 4 grams of sulphur in it?

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Solution

32 g S is present in = 1 mole H2SO4
4 g S is present in = 1/32*4 = 1/8 moles = 0.125 moles of H2SO4 (ans.)

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