Предмет: Химия, автор: asylaiadybaeva6

Если растворить в воде 15 г гидроксид
натрия, найдите массовую долю растворенного вещества очень срочно нужно прошу !!!!!❤️

Ответы

Автор ответа: yunapak312
0

Ответ:

m(Н2О) = 30г

m (NaOH) = 15г

W (NaOH) = x% Решение.

W(NaOH) = m(NaOH)/m раствора

m раствора = m(NaOH) + m (Н2О) = 30г +15г = 45г

W(NaOH) = 15/45 *100% = 33%

Ответ: W(NaOH) = 33%

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