Question

Pomocy daje naj i 5 gwiazdek :) klasa 7 stężenia procentowe. 1 zadanko ​

Answer 1

Cp1= 15%

mr1= 200 g

ms1=(Cp1*mr1)÷100%=(15%*200g)÷100%=30 g

Cp2= 20%

mr2=0,4kg=400g

ms2=(Cp2*mr2)÷100%=(20%*400g)÷100%=80g

ms3=ms1+ms2= 30+80=110g

mr3=mr1+mr2=200+400=600 g

Cp3=(ms3÷mr3)*100%=(110g÷600g)*100%= 18,33%