Question

nH2SO4=5moli
-----------------------
mH2SO4=?
nH2SO4=?
molecule H2O=?
atomi O=?

AJUTOR​

Answer 1

Răspuns:

Explicație:

5moli H2SO4

1.

n= m : M

M = 2 + 32 + 4.16=98------> 98g/moli

m= n . M

m= 5moli .98g/moli =490 g H2SO4

2.

5moli H2SO4

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

5moli --------------------------x

x= 5  .  6,023.10²³molecule = 30,115 .10²³ molecule H2SO4

3.

1mol H2SO4---------6,023.10²³molecule H2

5moli H2SO4----------x

x= 5 . 6,023.10²³= 30,115.10²³molecule H2

4.

cerintele nu sunt clare !!!

cred ca totul se refera la H2SO4

1mol H2SO4--------------4 . 6,023.10 ²³ atomi  O

5moli H2SO4--------------------x

x= 5  .  4  .  6,023.10²³ atomi O = 120,46 .10²³atomi O