1. Ca:
Mr = 40
M = 40 г/моль
v = 0,5
m = v * M = 0,5 * 40 = 20
*N(a) - число авогадро = 6,023*10^-23
N = v * N(a) = 0,5 * 6,023*10^-23 = 3,0115 * 10^-23
2. Cl2:
Mr = 35,5
M = 35,5 г/моль
v = m/M = 7,1 / 35,5 = 0,2
m = 7,1
N = n * N(a) = 0,2 * 6,023*10^-23 = 1,2046 * 10^-23
1. SO2:
Mr = 32+(16*2) = 64
M = 64 г/моль
v = N/N(a) = 18,06 * 10^-23 / 6,023*10^-23 ≈ 3
m = v * M = 3 * 64 = 192
N = 18,06 * 10^-23
2. NH3:
Mr = 14+(1*3) = 17
M = 17 г/моль
v = 2
m = v * M = 2 * 17 = 34
N = 2 * 6,023*10^-23 = 12,046 * 10^-23