Question

dume de hidrogen reactioneaza cu clorul.Calculeaza numarul de moli si numarul de molecule de produs de reactie

Answer 1

A,H2=2g/mol-----------------------------------> n,mol=m/A; n=2g/2g/mol=1mol H2
1mol     1mol     2mol
H2  +  Cl2---> 2HCl
1mol               2mol----> n= 2molHCl

1mol   contine  6,023x10²³molecule
2mol.....................2x6,023x10²³molecule=......................calculeaza !!!!