Răspuns:
Explicație:
MH2O= 2+16=18--------> 18g/moli
n= 3600g : 18g/moli=200 moli apa
1mol H2O---------6,023.10²³atomi O
200 moli H2O------------x
x= 200 . 6,023.10²³= 1204,6 .10²³atomi O