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Ex.20 What is the percentage of sulphur in sulphuricacid (H2SO)? |
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Answer» Percentage composition = (mass of the component/ total mass of the compound ) x100 Here, mass of S-atom = 32 gm and in H2SO4only one S-atom is present. Further molar mass of H2SO4= 2 + 32+ 64 = 98 gm Hence, percentage of sulphur = (32/98) x 100 = 32.65 % |
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