Question: how do these gasses form 4. The gas evolved when hydrochloric acid reacts with calcium carbonate is A calcium oxide gas B. carbon dioxide gas

how do these gasses form

4. The gas evolved when hydrochloric acid reacts with calcium carbonate is A calcium oxide gas B. carbon dioxide gas C. chlorine gas D. hydrogen gas The gas evolved when hydrochloric acid reacts with magnesium metal is A. carbon dioxide gas B. chlorine gas C. hydrogen gas D. oxygen gas

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