A solution of nickel (III) chloride is mixed with a solution of ammonium hydroxide. Find the chemical equation

Why are the trends and exceptions to the trends in ionization energy observed?

Can someone me with 3 and 4 plz. this is for masteries test.

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.