Ответ:
m(H2O)-?
m р-н -120g
w рр - 25%
__________
m pp = 120•0,25= 30g
m(H20)= 120-30= 90g
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Ответ:
m(H2O)-?
m р-н -120g
w рр - 25%
__________
m pp = 120•0,25= 30g
m(H20)= 120-30= 90g