Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices: (1) For molecules of similar molecular mass, nonpolar molecules have higher vapor pressures than polar molecules.
(2) Temperature values must be expressed on the Kelvin scale when using all gas laws except the ideal gas law.
(3) The average kinetic energy of a system of molecules decreases as temperature increases.
A) All three statements are true.
B) Two of the three statements are true.
C) Only one of the statements is true.
D) None of the statements is true.

Question

Quizplus · Accepted Answer

Statement 1 is true because nonpolar molecules generally have weaker intermolecular forces than polar molecules, leading to higher vapor pressures. Statement 2 is false; the Kelvin scale is required for all gas law calculations, including the ideal gas law, to avoid negative temperatures. Statement 3 is false; the average kinetic energy of a system of molecules increases as temperature increases.

Characterize EACH of the Three Given Statements as Being TRUE