The vapor pressure of liquid hexane, C6H14, is 40.0 mm Hg at 271 K. A sample of C6H14 is placed in a closed, evacuated container of constant volume at a temperature of 401 K. It is found that all of the C6H14 is in the vapor phase and that the pressure is 67.0 mm Hg. If the temperature in the container is reduced to 271 K, which of the following statements are correct? a. Some of the vapor initially present will condense.
b. Liquid hexane will be present.
c. No condensation will occur.
d. The pressure in the container will be 100. mm Hg.
e. Only hexane vapor will be present

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.