A reaction between aluminium powder and anhydrous barium nitrate is employed as the propellant in some fireworks. The only products formed are metal oxides and nitrogen. What volume of nitrogen, measured at room conditions, is formed when $0.783\,\text{g}$ of anhydrous barium nitrate reacts with excess aluminium?
- A$46.8\,\text{cm}^3$
- B$72.0\,\text{cm}^3$
- C$93.6\,\text{cm}^3$
- D$144\,\text{cm}^3$