i need help on these questions!!

Consider the following reaction at equilibrium: 2NH3(g)N2(g)+3H2(g) Le Chtelier's principle predicts that the moles of N2 in the reaction container will increase with A. some removal of NH3 from the reaction vessel ( V and T constant) B. a decrease in the total pressure ( T constant) C. addit iof some N2 to the reaction vessel ( V and T constant) D: a decrease in the total volume of the reaction vessel (T constant) The reaction below is exothermic: 2SO2(g)+O2(g)2SO3(g) Le Chtelier's Principle predicts that will result in an increase in the number of moles of SO3(g) in the reaction container. A. increasing the temperature iecreasing the pressure C. removing some oxygen D. increasing the amount of SO2