4Zn + 5H2SO4(к) → 4ZnSO4 + H2S + 4H2O
Zn 0 -2e = Zn +2 4
S +6 +8e = S -2 1
Zn + H2SO4(p) → ZnSO4 + H2
n(CO2) = m/M = 4.4/44 = 0.1 моль
V(CO2) = n*Vm = 0.1*22.4 = 2.24 л
N = n*Na = 0.1*6.02*10^23 = 0.602*10^23 молекул