September 2018 2 34 Report

do 0.4 l roztworu o stęzeniu 12 % i gęstości 1.6 g/cm3 dolano 128 cm3 wody.

Stęzenie otrzymanego roztworu wunosi:

a-9.1 %

b-12%

c-0.12%

d-10%

wyjasnic ..wprosze !:PD


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