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Calculate the formula mass of CuSO4.5H2O. 

[Atomic mass of Cu = 63.5 u, S = 32 u, O = 16 u, H = 1 u]

1 Answer

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Best answer

Formula unit mass of CuSO4.5H2O:

Atomic mass of Cu + Atomic mass of S + (4× atomic mass of O) + 5 (2× atomic mass of H + atomic mass of O) 

63.5 u + 32 u + 4× 16u + 5 (2 × 1 u + 16 u) 

63.5 u + 32 u + 64 u + 90 u 

249.5 u 

Thus, the formula unit mass of CuSO4.5H2O is 249.5 u

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