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Dau coroana! E urgent! 17 pct!!!!

Dau Coroana E Urgent 17 Pct class=

Răspuns :

Vs=200cm3=0.2L
Cp1=20%
Cpf=10%

ro(densitatea)=1.11g/cm3

ro=ms/Vs==>ms=ro*Vs=1.11g/cm3*200cm3=222g sol. HCl

Cp1=md/ms*100==>md=Cp*ms/100=222*20/100=44.4g 

Cpf=md1/md+mH2O*100; 10=44.4/44.4+mH2O*100==>10mH2O+444=4440g==>10mH2O=3996==>mH2O=399.6g