cate grame de sare si cate grame de apa sunt necesare pentru a obtine 300g de solutie de concentratie 15% URGEEEENT!!!!

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2 September 2025 chimie 5 minute
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cate grame de sare si cate grame de apa sunt necesare pentru a obtine 300g de solutie de concentratie 15% URGEEEENT!!!!
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ms=300g                       c=md.100:ms

c=15                               md=c.ms :100

md                                 md=15.300: 100=45g

mapa                             ms=md+ mapa

                                    mapa=ms - md

                                  mapa=300 - 45=255g

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