Answer:
0.5 moles of CO2 will react with 0.708 moles of H2O.
Explanation:
[tex]\sf balanced \ equation = 3CO2 + 4H2O \rightarrow C3H8 + 5O2[/tex]
using molar ratio:
4H2O : 3CO2
4 : 3
so H2O moles:
[tex]\sf\dfrac{0.708}{4} *3[/tex]
[tex]\sf 0.531[/tex] moles of CO2