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Se amesteca 20g saramura 8% cu 40g saramura 10%.Cata sare contine aolutia finala?

Răspuns :

ms1=20 g
c1=8%
ms2= 40g
c2=10%
md=?
c1= md1/ms1 * 100
c2= md2/ms2 * 100
md1= c1*ms1/100
md1=8*20g/100
md1=1,6g
md2= c2*ms2/100
md2=10*40/100
md2=4g