The equation Mg(s) 2HCl(aq)---MgCl2 (aq) H2(g) is an example of which type of reaction?

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The Mg has replaced the H in HCl; therefore, this is a single replacement type reaction.

I need help in science 1 5chpt Mg(s)+2HCL-MgCl2(aq)+H2(g)

Any one example I need

The equation represents a chemical reaction in which magnesium (Mg) reacts with hydrochloric acid (HCl) to form magnesium chloride (MgCl2) and hydrogen gas (H2).

The type of reaction this equation represents is a single replacement or displacement reaction. In this reaction, magnesium (Mg) displaces hydrogen (H) from hydrochloric acid (HCl) and forms magnesium chloride (MgCl2) as a product.

To identify the type of reaction, you can observe the reactants and products. In this case, one element (magnesium) replaces another element (hydrogen) in a compound (hydrochloric acid), resulting in the formation of a new compound (magnesium chloride) and a liberated element (hydrogen gas). This substitution or displacement of one element for another is characteristic of single replacement reactions.