Предмет: Химия, автор: Maero

Помогите выполнить четвертое задание. С химией слабость, фотография предоставлена

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Автор ответа: vadimbio

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Maero: Спасибо огромное, и, если не затруднит, можно решение задания под номером 2? Задание было дано ранее здесь, но его пропустили

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