Question

Calculati cati moli de SO2 (dioxid de sulf), cate molecule, cati atomi de sulf si cati atomi de oxigen se gasesc in 320 g SO2?

Answer 1

Răspuns:

         

Explicație:

320g SO2

moli SO2

nr. atomi S

nr. atomi O

M SO2= 32 + 2,16=64--------> 64g/moli

n= m : M

n=320g : 64g/moli = 5moli SO2

1mol S-------6,023.10²³molecule SO2------6,023.10²³S-------2 . 6,023.10²³O

5moli SO2--------------x-----------------------------y-----------------------------z

x= 5 . 6,023.10²³= 30,115 .10²³molecule SO2

y= 5 . 6,023 .10²³= 30,115 .10²³atomi S

z= 5 . 2 . 6,023.10²³= 60,023 .10²³ atomi O