Answer:
45 grams h20
Explanation:
This is a simple stoichiometry question . theres 18 grams in 1 mol of h20 (( h=1, 0=16, (hx2)+16=18))
2,5 mol h20 18 grams h20
------------------ x ----------------------- = 45 grams h20
1 1 mol h20
