Question

production 13 gees of C2H2 requires consumption of how many g of H2O

Answer 1

C₂H₂+2H₂O=Ca(OH)₂+C₂H₂

$n=\frac{m}{M}=\frac{13}{26}=0.5$ mol

$\frac{x}{2}=\frac{0.5}{1}$

x=1

$m=n\times M=1*18=18$ g