steliosceltics2541
11.03.2020 •
Chemistry
3. Which changes can reach dynamic equilibrium?
1. nuclear changes, only
2. chemical changes, only
3. nuclear and physical changes
4. chemical and physical changes
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Ответ:
OPTION C is correct
When magnesium burns, it combines with oxygen (O2) from the air to form magnesium oxide (MgO) according to the following equation: 2Mg(s) + O2(g) → 2MgO(s) Magnesium oxide is an ionic compound containing Mg2+ and O2− ions whereas Mg(s) and O2(g) are elements with no charges.