If 1.4 g of Calcium oxide is formed by the complete decomposition of Calcium carbonate, then the amount of Calcium carbonate taken and the amount of Carbon dioxide formed will be respectively

$1005644$

$?1.4$

$56g\to 100g$

$1.4\to ?$

$\frac{\cancel{1.4}\times \cancel{100}}{{\cancel{56}}_{\cancel{40}}}\Rightarrow 2.5g$

$2.5g\to {\text{CaCO}}_{\text{3}}$

$100g\stackrel{{\text{CaCO}}_{\text{3}}}{\to }44g{\text{CO}}_{\text{2}}$

$2.5\to ?$

$\frac{\cancel{2.5}\times {\cancel{44}}^{1.1}}{{\cancel{100}}_{40}}\Rightarrow 1.1$

${\text{CO}}_{\text{2}}\to 1.1g$

${\text{CaCO}}_{\text{3}}\to 2.5g$