Question

8g de H reactioneaza co oxidul de cupru 2 . se cere :
masa de oxid de cupru ce reactioneaza
masa de apa obtinuta

Answer 1

H2+CuO=Cu+H2O
H2=8mol
Y=m:M=8mol:2g/mol=4mol de H2
x=4mol CuO
m=Y*M=4mol*80g/mol=320g CuO
m(H2O)=M*Y=4mol*18g/mol=72g (H2O)