(a) Calculate the number of moles in 112 g of iron.
(b) Calculate the mass of 0.5 moles of sugar (C12H22O11).
(c) Define the term molecular mass.
(d) Determine the molecular mass of ZnSO4.
[Atomic mass of Zn = 65 u, S = 32 u, O = 16 u]
(e) Calculate the number of molecules of carbon dioxide, present in 4.4 g of CO2.
[Atomic mass of C = 12 u, O = 16 u, NA = 6.022 × 1023 mol−1