Would magnesium react with dilute sulfuric acid why or why not

Yes, magnesium will ract with dilute sulfuric acid, becasue magnesium can be oxidized to Mg (2+) cations and combine with the ion sulfate, SO4 (2-) to form magnesium sulfate, MgSO4.

This is the chemical equation

Mg + H2SO4 ⇄ MgSO4 + H2 (g) ↑

This is a displacement reaction, where the magnesium metal displaces the hydrogen in the molecule of sulfuric acid and leaves as H2 gas.