1 Gases consist of large numbers of molecules (or atoms, in the case of the noble gases) that are in continuous, random motion. 2  The volume of all the molecules of the gas is negligible compared to the total volume in which the gas is contained.  Attractive and repulsive forces between gas molecules is negligible.
Medical authorities say that Olympic sprint champion Florence Griffith Joyner died of suffocation month ago after suffering seizure while she slept; say seizure was caused by congenital abnormality of blood vessels in her brain (M)
During a news conference at the sheriff's department headquarters, neuropathologist Barbara Zaias related the cause of the seizure to cavernous angioma, or a congenital blood vessel malfunction, in the left frontal lobe of Griffith Joyner's brain. Fukumoto said the autopsy showed no heart problems. To Al Joyner, the late sprinter's husband, those results should end any further suggestions that Griffith Joyner's stunning success in the 1988 Olympics owed to use of performance-enhancing drugs or that such drug use was related to her death.