Предмет: Химия, автор: Кузя7127

Кто знает химию помогите фото внутри

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Автор ответа: kurull235
0
спрашивай чего не поймешь 
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Автор ответа: Кузя7127
0
огромное спасибо...да вроде всё понятно
Автор ответа: kurull235
0
ну мало ли почерк не разберешь
Автор ответа: ВаняТолстый
0
1. цинк, оксид магния и гидроксид меди. 2. сl2 + 2Na = 2NaCl + H2SO4 = Na2SO4 + 2HCl 2HCl + 2Mg = 2MgCl + H2. 3. Тут математика, это уж надо знать - считаем сколько моль хлороводорода выделяется в реакции, далее умножаем на 22.4. Вот и получаем объём л хлороводорода. 4. Миллион вариантов. Самый интересный - добавляем в пробирки порошок какого-нибудь активного металла (но не щелочного), например, магния или цинка. Где пузырится - там кислота.  2Мg + 2HCl = 2MgCl + H2. Zn + 2HCl = ZnCl2 + H2
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