Assume that the following reaction occurs at conditions that facilitate reversibility: NH4HS(s)=NH3(g)+H2S(g);H>0 Which change(s) to an equilibrium mixture of this reaction will increase the yield of H2S(g) ? Select one or more: removing some NH4HS(s) from the reaction mixture removing NH3(g) from the reaction mixture raising the temperature at which the reaction takes place decreasing the volume of the reaction vessel (at a constant T ) removing H2S (g) from the reaction mixture. lowering the temperature at which the reaction takes place adding H2S(g) to the reaction mixture increasing the volume of the reaction vessel (at a constant T ) adding more NH4HS(s) to the reaction mixture adding NH3(g) to the reaction mixture