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Молекула какого из указанных веществ имеет наибольшую массу?.
а)Водорода.
б)Кислорода.
в)Гелия.
г)Азота.
Ответы 1
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ну очень лёгкий вопрос, таблица Менделеева в помощь))Ответ: б
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Автор:
adrianna89jk - 2 года назад
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5
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Составить утвердительные предложения с местоимениями I, you, he, she, we, they используя выражения: do morning exercise, have dancing classes, have music lessons, do homework, help my mum, cook, every day
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