Question

aflati numarul de moli si numarul atomic din 30 g de Zinc

Answer 1

Zn

AZn= 65

65 gZn-------------1mol Zn

30 gZn--------------x

x=30:65=0,46 moli Zn

23

1 mol Zn-------------6,023.10 atomi Zn

0,46 moli Zn---------y

23

y=0,46.6,023.10 atomi Zn

calculeaza!