Zad.1
I mr = 120g
Cp = 24%
ms = 24%*120g /:100% = 28,8g
II mr = 120g + 40g = 160g
ms = 28,8g
Cp = 28,8g/:160g *100% = 18%
Zad.2
V = 8dm3
ms = 312 g
M(Na2S) = (23*2 + 32)g/mol = 78g/mol
n = 312g/:78g/mol = 4mole
Cm = 4mole/:8dm3 = 0,5 mol/dm3
