Answer:
I can tell you some ways in which the reaction of Nitrogen and Hydrogen could be changed to alter the equilibrium.
Changing the pressure: If the pressure is increased, there will be more collisions between the molecules and this will increase the rate of the forward reaction. As a result, the equilibrium will shift to the left, leading to a decrease in the number of molecules of NH3.
Changing the temperature: If the temperature is increased, the kinetic energy of the molecules will increase, leading to more collisions between the molecules. This will increase the rate of the forward reaction and shift the equilibrium to the left.
To model these changes in a simulation, you could use the temperature slider to increase or decrease the temperature of the mixture and observe the changes in the equilibrium. You could also use the pressure slider to increase or decrease the pressure of the mixture and observe the changes in the equilibrium. Additionally, you can use the pause button to observe the number of particles at any point in time.