Question

cati atomi de calciu se gaseste in 2 moli de CaO
Dau coroana, pls

Answer 1

Răspuns:

. 1mol =40 g Ca....6,023*10(23)

x 18,069*10(23)

x=120 g

2. 1mol 6,023*10(23)

0,5 mol................y=3,0115*10(23)

valabil pentu Ca ,N;O