When equal masses of $\text{CaCO}_3$, $\text{Ca(NO}_3\text{)}_2$, $\text{BaCO}_3$ and $\text{Ba(NO}_3\text{)}_2$ are heated so that thermal decomposition takes place, the volume of gas formed in each experiment is measured under the same conditions. Which compound will give the largest volume of gas?
- A$\text{CaCO}_3$
- B$\text{Ca(NO}_3\text{)}_2$
- C$\text{BaCO}_3$
- D$\text{Ba(NO}_3\text{)}_2$