What is the balanced chemical equation for the reaction between iron (ii) oxide and hydrogen gas that produces metallic hydrogen and water

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have

Amixture with the same composition throughout is!

Which states of matter have particles that move independently of one another with very little attraction?