# The molecular mass of H_(2)SO_(4) is 98 amu . Calculate the number of moles of each element in 294 g of H_(2)SO_(4) .

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The molecular mass of H_(2)SO_(4) is 98 amu . Calculate the number of moles of each element in 294 g of H_(2)SO_(4) .

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Number of moles of H_(2)SO_(4) = (294)/(98) = 3.
From the formula H_(2)SO_(4) we know that 1 molecule of H_(2)SO_(4) contains 2 atoms of H , 1 atoms of S and 4 atoms of O . Thus , 1 mol of H_(2)SO_(4) will contain 2 mol of H , 1 mol of S and 4 mol of O atoms .
Therefore , in 3 mol of H_(2)SO_(4) .
number of moles of H = 2 xx 3 = 6
number of moles of O = 4 xx 3 = 12 .