Which chemical could react with an acid to form hydrogen?

What is the correct formula for nitric acid?

What does sodium form when it reacts with water?

A molecule contains 2 atoms of oxygen, 6 atoms off hydrogen and 3 atoms of carbon. What is the formula of the molecule?

Write a balanced equation for when magnesium reacts with oxygen

Why does the mass of the contents increase in this reaction?

Is Magnesium oxide a compound, metal, mixture or a non-metal?

Why should you not use sodium in a reaction?