Gases A, B, C, and D are related by the following reversible reaction: A + B ⇌ C + 2D

Write the expression for the equilibrium constant for this reaction.

At a certain temperature, the concentrations of A, B, and C are 0.54M, 0.34M, and 0.46M, respectively. The Keq for this reaction is 1.6. Find the concentration of D.

Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3