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а)Во сколько раз атом Купрума тяжелее атома Сульфура?
б) на сколько атом Селена легче атома Аргентума?
Прошу вас скажите ! Заранее спасибо) умоляю!!!!!!Срочно!
Ответы 1
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Cu=64,S=32 в 2 раза;Se=79,Ag=108,на 29
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Автор:
lázaro - 5 лет назад
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