Question

Ce cantitate de hidrogen se gaseste in 2g apa distilata?

Answer 1

H2+O2⇒H2O2
$M_{H2O2}$=2·1+2·16=2+32=34
34 g H2O2...........2 g H2
2g H2O2..............x
x=$\frac{2*2}{34}= \frac{4}{34}$
x=0,11 g