Having a hard time with this one

Question

Solid magnesium carbonate decomposes into soild magnesium oxide and carbon dioxide gas

Balanced equation, type of reaction, and state of matter

Answer 1

MgCO₃ (s) → MgO (s) + CO₂ (g) **Reaction is balanced as written.

This is a decomposition reaction where one compound breaks into 2 or more simpler compounds or elements.