Question

Sa se calculeze masa molara unei substante Y stiind ca in 450g de substanta Y se afla 36, 132 × 10²³ molecule.​

Answer 1

Răspuns:

Explicație:

1mol subst. y-------------6,022.10²³ molecule

xmoli------------------------36,132.10²³ molecule

x= 36,132.10²³ : 6,022.10²³= 6moli subst .y

n= m : M

M= m : n

M= 450g : 6moli= 75 g/moli