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MikhailPetrovblyaaa
@MikhailPetrovblyaaa
August 2022
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к 500 грамм 15% раствора соли добавили 70 грамм соли , вычислить W
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udodovi
Mв-ва1= mр-ра*ω/100%=500*15%/100%=75г
mв-ва2=mв-ва1 + mв-ва=75+70=145г
mр-ра2=mр-ра1+mв-ва=500+70=570г
ω=mв-ва/mр-ра*100%=145/570г*100%=25,44%
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mв-ва2=mв-ва1 + mв-ва=75+70=145г
mр-ра2=mр-ра1+mв-ва=500+70=570г
ω=mв-ва/mр-ра*100%=145/570г*100%=25,44%