Calculate the formula unit mass of ${\mathrm{CaCO}}_3$ (Atomic mass of $\mathrm{C}$ = 12 u, $\mathrm{Ca}$= 40 u,$\mathrm{O}$ = 16 u)

Q. (a) Define 'formula unit' of an ionic compound. What is the formula unit of (i) sodium chloride, and (ii) magnesium chloride ?
(b) Calculate he formula masses of the following compounds :
(i) Calcium chloride
(ii) Sodium carbonate
(Given : Atomic masses : Ca = 40 u ; Cl = 35.5 u ; Na = 23 u ; C = 12 u ; O = 16 u)

Q. The molecular formula of glucose is C₆H₁₂O₆. Calculate its molecular mass. (Atomic masses : C = 12 u ; H = 1 u ; O = 16 u)

Q.

Calculate the formula unit masses of ZnO, Na₂O, K₂CO₃, given atomic masses of Zn = 65 u, Na = 23 u, K = 39 u, C = 12 u, and O = 16 u.

Q. Calculate the formula unit mass of $ZnO,N{a}_{2}O\text{and}{K}_{2}C{O}_3$ respectively.
Given atomic mass of
$Zn=65uNa=23uK=39uC=12uO=16u$