Question

Ce cantitate de H2 se gaseste in 6 moli H2O?

Answer 1

6 moli H2O MH2O=2+16=18

g H2 18g H2O---------1mol H2O

X g--------------6moli H2O

X=18.6=108 g H2O

18g H2O---------2gH

108 g H2O--------X gH

X=108.2:18=12 g H