How does the law of conservation of mass identify an unknown substance?

What stress will shift the following equilibrium system to the left? n2(g) + 3h2(g) ⇌ 2nh3(g) adding more n2(g) adding more nh3(g) increasing the pressure of the system reducing the volume of the container

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change

Type the letter that represents the correct location for each particle type below.