Why do we rub magnesium ribbon with sandpaper?

Water ionizes by the equation h2o(l)⇌h+(aq)+oh−(aq) the extent of the reaction is small in pure water and dilute aqueous solutions. this reaction creates the following relationship between [h+] and [oh−]: kw=[h+][oh−] keep in mind that, like all equilibrium constants, the value of kw changes with temperature.

Stage in which a typical star has completely stopped fusion

What are the chemical names of these compounds? ke: mg3n2: reset next