w 170, 75 cm3 wody rozpuszczono 0,5 mola chlorku sodu. oblicz stęzenie procentowe tego roztworu ?
0,5mola - x
1 mol - 58,5 g (bo Cl=35,5g Na=23g)
z proporcji: x=58,5*0,5/1=29,25g
c%=ms/mr*100%
c%=29,25/ (29,25+170,75)*100%=14,625%
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0,5mola - x
1 mol - 58,5 g (bo Cl=35,5g Na=23g)
z proporcji: x=58,5*0,5/1=29,25g
c%=ms/mr*100%
c%=29,25/ (29,25+170,75)*100%=14,625%