Stezenie procentowe 40% oblicz mase sunstancji jesli masa roztworu wynosi 80g
40g sub.-------------100g roztw.
x----------------------80g roztw.
x= 32g sub
40-100
x-80
x=32
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40g sub.-------------100g roztw.
x----------------------80g roztw.
x= 32g sub
40-100
x-80
x=32