Răspunsuri

2014-11-09T19:12:24+02:00
1 mol H2O...16gO
2 moli H2O...xgO
1/2=16/x⇒x=2·16=32gO

1 mol Al2O3...48gO
5 moli Al2O3...xgO
1/5=48/x⇒x=5·48=240gO