Which of the following statements is true about the composition of the atmosphere? a. the atmospheric conditions are uniformly even as latitude and altitude changes. b. the atmosphere is composed of two gases - oxygen and carbon dioxide. c. the atmosphere produces ultraviolet radiation in its ozone layer. d. the atmospheric conditions vary as one changes latitude and altitude.

Achemical equilibrium between gaseous reactants and products is shown. n2(g) + 3h2(g) ⇌ 2nh3(g) how will the reaction be affected if the pressure on the system is increased? it will shift toward the reactant side as there is lower pressure on the reactant side. it will shift toward the product side as there is higher pressure on the product side. it will shift toward the reactant side as there are a greater number of moles of gas on the reactant side. it will shift toward the product side as there are a fewer number of moles of gas on the product side.