The Keq is 0.0420 for the equilibrium reaction PCl4 (g)  PCl3 (g) + Cl2 (g). Determine the equilibrium concentrations of all the species if the initial concentration of PCl5 is 0.0500M.

The formula is (nh4)2co3

Hello thereone of the following properties was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version. which property fits this description? answer: atomic mass  was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

That is a lot of moles that you have

Ibelieve it is b. proton.hope my answer has you : )