Question

How many grams of H₂O are needed to react with 3250 g CO? 

Answer 1

The reaction is as shown below;

$H_2O+CO\to CO_2+H_2$

Molar mass of $CO=12+16=28$

Number of moles of CO=$3250/28=116.07moles$

Molar mass of $H_2O=2+16=18$

Mole ratio, $H_2O:CO=1:1$

Grams of $H_2O$ reacted$=116.07\times 18=2089.26g$