In this reaction had a mass of 8.159 g. The initial mass of the metal nitrate sample was 9.835 g. Assuming that the reaction goes to completion, Â the number of moles of the sulfate salt produced is 1 mole.
The reaction is given as :
M(NO₃)₂  +  Na₂SO₄  ------>   2NaNO₃   +  MSO₄
so, it is clear that , 1 mole of metal nitrate produces 1 mole of metal sulphate.
mass of metal nitrate = 9.835 g
mass of metal sulfate = 8.158 g
moles of metal nitrate = moles of the metal sulfate.
moles = mass / molar mass
Thus, the moles of  MSO₄ = 1 mole.
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