Mass-mole relationship

Question

Iron reacts with H2 SO4 according to the equation:Fe + H2 SO4.                             FeSO4  + H2 Calculate the mass of FeSO4 that would be produced by 0.5mol of Fe(H=1,S=32,Fe=56)

Answer 1

Fe + H2SO4 ==> FeSO4 + H2

If you use 0.5 moles of Fe (and assuming there is enough H2SO4), then you will produce 0.5 moles of FeSO4 because according to the balanced equation above, that is the stoichiometric ratio.  1 Fe makes 1 FeSO4.

 

Converting 0.5 moles FeSO4 to mass: 

molar mass = 56 + 32 + (4x16) = 152 g

0.5 moles x 152 g/mole = 76 grams <= Answer