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koty077
@koty077
July 2022
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m чист в-ва=2 кг W чист=80% найти m смеси
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pasenkova
Из формулы w=m вещества/m смеси* 100%
mсмеси =w*mвещества/100%
m=2*80/100=1,6г
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pasenkova
извините, допустила ошибку, будет mсмеси=mраствора/w*100% m=2/80*100%=2,5г
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Answers & Comments
mсмеси =w*mвещества/100%
m=2*80/100=1,6г