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Question
Calculate the molecular mass of the following:
Na2SO4.10H2O
Given atomic mass of Cu = 63·5, H = 1, O = 16, C = 12, N = 14, Mg = 24, S = 32
Solution
The molecular mass of Na2SO4.10H2O
= (2 x 22.99) + (1 x 32.06) + 4 x 16.00) + (10 x 18.02)
= 45.98 + 32.06 + 64.00 + 180.2
= 322.24
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