Question

calculati masa(g),numarul de molecule,pentru 5 moli de hidroxid cupric.​

Answer 1

Răspuns:

Explicație:

Cu (OH)2

M= 64 + 2.16 +2 = 98 --------> 98g/moli

m= n . m

m= 5moli . 98g/moli =490g Cu(OH)2

1mol Cu(OH)2-----------6,023.10²³molecule

5moli----------------------------x

x= 5  .  6,023.10²³=30, 115 .10²³molecule