The decomposition of nh4hs is endothermic: nh4hs(s)⇌nh3(g)+h2s(g) part a which change to an equilibrium mixture of this reaction results in the formation of more h2s? which change to an equilibrium mixture of this reaction results in the formation of more ? a decrease in the volume of the reaction vessel (at constant temperature) an increase in the amount of nh4hs in the reaction vessel an increase in temperature all of the above