Question

Number of moles in 10g of calcium carbonate. Calculate.

Answer 1

1mole of caco3 = GMM of caco3 1mole of caco3 =100g 100g of caco3 =1mole of caco3 10g of caco3 = 1×10÷100 =0.1mole

Answer 2

1 mol of ${CaCO}_{3}$ = GMM of ${CaCO}_{3}$

1 mol of ${CaCO}_{3}$ = 100g of ${CaCO}_{3}$

10g of ${CaCO}_{3}$ = $\frac{1~×~10}{100}$

• $\frac{1}{10}$ = 0.1 mol

:. Number of moles in 10g of calcium carbonate is 0.1 mole