2H₂ + O₂ → 2H₂O
[tex] \frac{22.8 mol H2O}{1} [/tex] * [tex] \frac{1mol O2}{2 mol H2O} [/tex] =
11.4 mols O₂
CaCO₃ + 2HCl → CaCl₂ + CO₂ + H₂O
[tex] \frac{35.48molHCl}{1} * \frac{1 mol CO2}{2 mol HCl} * \frac{44.01 grams CO2}{1 mol CO2} [/tex] =
780.7 grams CO₂
hope this helped!