Answer:C. Mg + H₂SO4 → MgSO4 + H₂
Step-by-step explanation:
A single replacement reaction is a chemical reaction in which an element in a compound is replaced by another element. For example, the reaction between magnesium and sulfuric acid could be represented by the following balanced equation:
Mg + H2SO4 -> MgSO4 + H2
In this equation, the magnesium replaces the hydrogen in the sulfuric acid, forming magnesium sulfate and hydrogen gas.
The correct balanced equation for the reaction between magnesium and sulfuric acid is:
Mg + H2SO4 -> MgSO4 + H2
This equation shows that one molecule of magnesium reacts with one molecule of sulfuric acid to produce one molecule of magnesium sulfate and one molecule of hydrogen gas. The coefficients in front of each compound indicate the number of molecules of each compound that are present in the reaction.