Odpowiedź:
M=95g/mol
V1=0,1dm3=100cm3
Cm1=1mol/dm3
d1=1,09g/cm3
n1=Cm1*V1=1*0,1=0,1mol
ms1=n1*M=0,1*95=9,5g
mr1=V1*d1=100*1,09=109g
m(Hydratu)=15g
M(Hydratu)=95g/mol(MgCl2)+108g/mol(6H2O)=203g/mol
ms2=15*(95/203)=7,02g
msx=ms1+ms2=9,5+7,02=16,52g
mrx=mr1+m(Hydratu)=109+15=124g
Cpx=(16,52*100%)/124=13,32%
dx=1,11g/cm3=1110g/dm3
Cmx=(Cpx*dx)/(M*100%)=(13,32*1110)/(95*100)=1,556mol/dm3
Wyjaśnienie: