Zadanie 1 Ile gramów 25% roztworu należy dodać do 350g 55% roztworu aby otrzymać roztwór 30%.
m1/m2=(30-25)/(55-30)m1/m2=5/25=1/5m2=5m1m1=350g m2=5*350gm2=1750g
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m1/m2=(30-25)/(55-30)
m1/m2=5/25=1/5
m2=5m1
m1=350g m2=5*350g
m2=1750g