Question

MgO+H2O=Mg(OH)2+фф

Answer 1

MgO + H2O = Mg ( OH ) 2 .

И всё

Answer 2

The chemical equation you provided is incorrect. The correct equation for the reaction between magnesium oxide (MgO) and water (H2O) is:

MgO + H2O → Mg(OH)2

In this reaction, magnesium oxide reacts with water to form magnesium hydroxide.