Answer:
The answer to your question is 462 grams
Explanation:
Data
mass of CO₂ = ?
moles of HCl = 21
Balanced chemical reaction
CaCO₃ + 2HCl ⇒ CaCl₂ + CO₂ + H₂O
Process
1.- Calculate the moles of CO₂ produced using proportions
2 moles of HCl --------------- 1 mol of CO₂
21 moles of HCl --------------- x
x = (21 x 1) / 2
x = 21 / 2
x = 10.5 moles of CO₂
2.- Calculate the molar mass of CO₂
CO₂ = 12 + (16 x 2) = 12 + 32 = 44 g
3.- Convert the moles of CO₂ to grams
44 g of CO₂ ---------------- 1 mol
x ---------------- 10.5 moles
x = (10.5 x 44) / 1
x = 462 grams
