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
