Consider the reaction. PCl5(g) =PCl3(g) + Cl2 (g) K = 0.042 The concentrations of the products at equilibrium are [PCl3] = 0.23 M and [Cl2] = 0.10 M. What is the concentration of the reactant. PC5, at equilibrium?​

In all living cells dna controls cellular activities by

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present

What is the volume of 2.5 moles of nitrogen gas (n2)at standard temperature and pressure (stp)?