where Q is the heat of combustion. In this reaction, atoms are conserved and the equation balances for each of the species. The reaction is a stoichiometric reaction, and the coefficients multiplying ...

In flasks 1 and 2, a small amount of Mg is used and therefore the metal is the limiting reagent. In flask 3, the reagents are added in a stoichiometric ratio. In flask 4, excess Mg is added and HCl ...

Researchers from Sun Yat-sen University have created a non-stoichiometric persistent luminescence (PersL) inorganic material, CaGa x O 4:Bi (x < 2), that can react to a variety of UV light stimuli.