care este concentratia procentuala a unei solutii de zahar obtinuta prin adaugarea a 300grame apa peste 500grame solutie de concentratie 25%

Răspunsul a fost dat de: USER9123
27 Agustus 2025 chimie 5 minute
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Clasă: Education Materie: chimie
care este concentratia procentuala a unei solutii de zahar obtinuta prin adaugarea a 300grame apa peste 500grame solutie de concentratie 25%
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• ms=500g
c=25%
c=(md*100):ms=> md=(c*ms):100=> md=125g
Md niciodata nu se modifica, doar ms se modifica.
• ms'=md+m(apa)=> ms'=300+125=> ms'=325g
• c'=(md*100):ms'=> c'=(125*100):325=> c'=12500:325=> c'=500:13%
Răspunsul a fost dat în data 27 Agustus 2025

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