Question

calculate the molecular mass of MgSO4​

Answer 1

Explanation:

Mass of 1 mole of a substance is the molar mass of that substance. 

Molar mass of MgSO4 = (24 + 32 + (16 x 4)) = 120 g

So, mass of 2 moles of MgSO4 = 120×2=240 g  

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Answer 2

Therefore, the molecular mass of MgSO4 is 120.366 g/mol.