Răspuns:
Explicație:
18 kmoli= 18000moli
18000moli xmoli ymoli
3Ni(OH)2 +2 H3PO4= Ni3(PO4)2 + 6H2O
3 moli 1mol 6moli
x= 18000 . 1 : 3=6000 moli Ni3(PO4)2
y= 18000 .6 : 3=36000 moli H2O
MH2O= 2 + 16= 18------> 18g/moli
m= 36000 moli . 18g/moli=648000 g =648 Kg H2O