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Chemistry, 10.06.2020 21:57 Geo777

Помогите пожалуйста или с первым вопросом или со вторым. Буду очень благодарна, т. к. это мой зачет... :С


Помогите пожалуйста или с первым вопросом или со вторым. Буду очень благодарна, т.к. это мой зачет.

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