Do 0,5 kg 4-procentowego roztworu soli dosypano 20 g tej soli . OBLICZ STĘŻENIE PROCENTOWE OTRZYMANEGO ROZTWORU. ... Pomocy ! Dam naj , gwiazdki i tp. ⭐

ms1 = 0,04 * 500 = 20g ms2 = 20g msc = 20 + 20 = 40g mr = 500 + 20 = 520g Cp = 40/520 * 100% = 7,69%

ms1=Cp1*mr1/100% Cp1=4% mr1=0,5kg=500g ms1=4%*500g/100%=20g ms2=20g+20g=40g mr2=500g+20g=520g Cp2=ms2*100%/mr2 Cp2=40g*100%/520=7,69%