Ответ:
m(rastvora) =50+2.5=52.5 g
w(NaCl)=2.5*100%/52.5=4.76%
Объяснение:
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Ответ:
m(rastvora) =50+2.5=52.5 g
w(NaCl)=2.5*100%/52.5=4.76%
Объяснение: