The van der Waals constant, a, is a factor that corrects for O deviations in the gas constant, R. O the attractive forces between gas molecules. O the average velocities of the gas molecules. the...

Extracted text: The van der Waals constant, a, is a factor that corrects for O deviations in the gas constant, R. O the attractive forces between gas molecules. O the average velocities of the gas molecules. the volume occupied by the gas molecules O the tendency of the gas molecules to ionize.