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Автор - SonyaDomracheva

Определите массовую долю каждого элемента в гидроксиде натрия NaOH :)

Ответ

Автор - PrincessaChocolate
Mr=23+16+1=40
w(Na)=23*1/40=0.575=57%
w(O)=16*1/40=0.4=40%
w(H)=1*1/40=0.025=2.5%

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