Of the reactions below, which one is a decomposition reaction? A) 2CH₄+ 4O₂-2CO₂+ 4H₂O B) 2Mg + O₂- 2MgO C) Cd(NO₃)₂+ Na₂S - CdS + 2NaNO₃ D) 2N₂+ 3H₂- 2NH₃ E) NH₄Cl - NH₃+ HCl

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In a decomposition reaction, a single compound breaks down into two or more simpler substances. In option E, NH₄Cl decomposes into NH₃ and HCl.

Of the Reactions Below, Which One Is a Decomposition Reaction