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The molar mass of Na2SO4 is ……(a) 129 (b) 142 (c) 110 (d) 70 |
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Answer» (b) 142 Na2SO4 = Molar mass = (23 x 2) + (32 x 1) + (16 x 4) = 46 + 32 + 64 = 142 |
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