Which of the following statements related to a mole are true? Select all that apply. A A mole is used to simplify the counting of atoms.
B. Representative particles can only be atoms.
C. Amole is used to simplify the counting of electrons.
D. Representative particles can be atoms, molecules, or formula units.
E. The number of representative particles in a mole (6.02 x 1023) is called Avogadro's number.

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.