Предмет: Химия, автор: tenalifeofgames

ДАЮ 100 БАЛОВ ПОМОГИТЕ ПОЖАЛУСТА❤️✨

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Ответы

Автор ответа: ariti

1 б
2 в
3 б

1. кислотами, називають речовини, які містять на початку формули елемент H
2. Li2O, FeO - основні оксиди, всі решту - кислоти
3. а

1. а) HgO
б) Ag2O
в) MnO2
г)Al2O3
2. а) 2H3PO4+3CaO=Ca3(PO4)2+3H2O - обміну
б) CO2+K2O=K2CO3 - сполучення
в) H2O+SO3=H2SO4 - сполучення

четвертий рівень, там стрілка назад чи як?

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