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
