Question

In cate g de H2SO4 se afla acelasi numar de molecule ca in 5 kmoli de H3PO4? ​
pokjuuuuu ajutatiama

Answer 1

Răspuns:

Explicație:

5 kmoli H3PO4

nr.molecule

g H2SO4

-se afla M H3PO4= 3+31 +4.16=98------> 98g/moli

5kmoli=5000 moli H3PO4

1 mol H3PO4----------- 6,023.10²³molecule H3PO4

5000 moli---------------------------x

x= 5000  . 6,023,10²³=30115 .10²³molecule H3PO4

-se afla  MH2SO4= 2+32 +4.16=98------> 98g/moli

1mol H2SO4---------------------6,023.10²³molecule H2SO4

Ymoli H2SO4-------------------------------30115.10²³molecule H2SO4

Y= 30115 .10²³: 6,023.10²³ =5000 moli H2SO4

m= 5000moli . 98 g/moli =490000g H2SO4 = 490 kg H2SO4