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Question
Calculate the relative molecular mass of CaSO4 [Zn = 65, S=32, O = 16, Ca = 40, C = 12]
Solution
The relative molecular mass of CuSO4
At wt. of Ca + At. wt. of S + 4 [at. wt. of O]
= 40 + 32 + 4(16)
= 72+ 64
= 136
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