Calculate the equilibrium constant for the reaction below given that the concentrations of reacting species at equilibrium are (Cl2] = 0.11 M, [H2] = 0.15 M, and (HCl) = 0.95 M.
Cl2(g) + H2(g) → 2 HCl(g)

As you move from right to left on the periodic table the atomic radius fill in the blank

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!