Given that the molecular mass of iron is 56 and that of oxygen is 16, how many moles of iron(iii)oxide will be contained in 1kg of the compound?
-
A.
25.0 moles -
B.
12.5 moless -
C.
6.25 moles -
D.
3.125 moles -
E.
0.625 moles
Correct Answer: Option C
Explanation
Fe2O3 = 56 x 2 + 48 = 160 = 1 moles
1000gm will contain (frac{1000}{160}) = 6.25 moles