Răspunsuri

2014-08-12T13:16:34+03:00
Cp=md/ms *100

cp-concentratia procentuala
md-masa de substanta dizolvata
ms-masa solutiei

ms=md +m H2O

9/10= 450/(450+m H2O) *100

9/10 = 45000/ (450 + m H2O)

(450+m H2O)= 10*45000/9

450+ m H2O= 10*5000

450+m H2O=50 000

m H2O= 50 000-450

m H2O= 49 550g
1 5 1
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  • Utilizator Brainly
2014-08-12T13:17:39+03:00