Answer:
The answer to your question is 131 g of CO₂
Step-by-step explanation:
Data
mass of CO₂ = ?
mass of C₂H₂ = 38.9 g
Balanced chemical reaction
2C₂H₂ + 5O₂ ⇒ 4CO₂ + 2H₂O
Process
1.- Calculate the molar mass of C₂H₂ and CO₂
molar mass C₂H₂ = (12 x 2) + (1 x 2) = 24 + 2 = 26 g
molar mass CO₂ = (12 x 1) + (16 x 2) = 12 + 32 = 44 g
2.- Use proportions to solve this problem.
2(26) g of C₂H₂ -------------------- 4(44) g of CO₂
38.9 g of C₂H₂ -------------------- x
x = (38.9 x 4(44)) / 2(26)
x = 6846.4 / 52
x = 131.6 g of CO₂