In the chemical reaction, calcium carbonate (CaCO3) was heated to form two new substances: calclum
oxide (Cao) and carbon dioxide (CO₂).
CaCO3 → CaO + COz
A student heated 24.8 g of CaCO3. After the reaction, they measured 13.9 g of Cao.
What was the mass of the CO₂ gas that escaped during the reaction?
A.10.9 g
B. 38.7 g
C.1.78 g
D.24.8 g