Răspuns:
Explicație:
12,044 .10²³molecule H2SO4
masa de H2SO4
1 mol H2SO4 ----------6,023.10²³molecule H2SO4
x moli-------------------------12,044 .10²³ molecule
n= 12,044 .10²³: 6,023.10²³ =2 moli H2SO4
m= n . M
M=2+ 32 + 4.16= 98-------> 98g/moli
m=2moli . 98g/moli=196 g H2SO4