After $4\,\text{g}$ of powdered calcium carbonate, $M_r = 100$, was added to $100\,\text{cm}^3$ of $0.10\,\text{mol dm}^{-3}$ hydrochloric acid, the volume of carbon dioxide formed was measured. Which row contains the correct explanations for these observations?
- Afewer collisions between reacting molecules occur; the calcium carbonate is used up
- Bfewer collisions between reacting molecules occur; the hydrochloric acid is used up
- Cmore collisions between reacting molecules occur; the calcium carbonate is used up
- Dmore collisions between reacting molecules occur; the hydrochloric acid is used up