August 2018 1 21 Report
Zad 1
Do 30 g 5 % roztowru soli kuchennej dodano 10g soli. Oblicz stezenie procentowe tego roztworu !

zad 2
Do 80 g 12 % roztworu sody dodano 130 g 15 % roztworu sody. Oblicz ztezenie tego roztworu.... !!!!
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