Do roztw.NaCl o nieznanym stezeniu(rozt1) dodano 22 g stalego Nacl.otrzymano 400,00 g roztworu o Cp=20%masowych.Obl.Cp roztwo1 w procentach masowych
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
400g - 100%
xg - 20%
x=8000/100
x=80g
80g - 22g = 58g
400g - 22g = 378g
378g - 100%
58g - x%
x=5800/378
x=15,34...~15%