Gas syringe X holds $100\text{ cm}^3$ of hydrogen bromide gas, $\text{HBr}$. Gas syringe Y holds $100\text{ cm}^3$ of carbon dioxide gas. Each gas volume is measured at room temperature and pressure. Which statement is correct?
- AThe mass of HBr is less than the mass of $\text{CO}_2$.
- BThe number of molecules of HBr equals the number of molecules of $\text{CO}_2$.
- CThe gas in syringe X contains more atoms than the gas in syringe Y.
- DThe number of moles of HBr is more than the number of moles of $\text{CO}_2$.