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polikahinkirill
@polikahinkirill
July 2021
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определите массовую долю раствора, который получили при смешивании 25г. 2% раствора соли и 40г. 5% раствора этой соли.
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bishbarmak02
M1=25*2/100=0,5г
m2=40*5/100=2г
Wр-ра=(0,5+2)/(25+40)*100=3,8%=4%
5 votes
Thanks 3
jev89380
умоляю помогите мне https://znanija.com/task/34083177
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Answers & Comments
m2=40*5/100=2г
Wр-ра=(0,5+2)/(25+40)*100=3,8%=4%