Question

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Answer 1

Explanation:

i think option 3 is correct

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Answer 2

Explanation:

In chemistry, a carbonate is a salt of carbonic acid (H2CO3), characterized by the presence of the carbonate ion, a polyatomic ion with the formula of CO 2− 3. . The name may also refer to a carbonate ester, an organic compound containing the carbonate group C(=O)(O–)2.