oblicz stężenie procętowe700gw30%roztworu soli do którego dosypano150gsoli

mr1= 700g Cp1= 30% mr2=? Cp2=?   Cp1= ms1*100%/mr1 ms1= 30% * 700g/ 100% ms1= 210g   ms2= 210g+150g= 360g mr2= 700g+150g= 850g Cp2= 360g * 100%/ 850g Cp2= 42,36%