не понял что за первый столбик но ок
m(N2) = 84
M(N2) = 28
n(N2) = 84/28 = 3
N(N2) = 6.02 * 10^23 * 3 = 1.8 * 10^24
V(N2) = 3 * 22.4 = 67.2
n(Fe2O3) = 5
M(Fe2O3) = 160
m(Fe2O3) = 800
N(Fe2O3) = 5 * 6.02*10^23 = 3 * 10^24
V(Fe2O3) = 5 * 22.4 = 112
N(N2O5) = 12 * 10^23
n(N2O50 = 2
V(N2O5) = 2 * 22.4 = 44.8
M(N2O5) = 28 + 80 = 108
m(N2O5) = 216
m(HNO3) = 189
M(HNO3) = 63
n(hNO3) = 3
v(HNO3) = 67.2
N(HNO3) = 6 * 10^23 * 3 = 1.8 * 10^24