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)
Deborah Feingold/Corbis via Getty. Dr. Joy Browne, the radio and TV psychologist who lent her expert advice on air for nearly 40 years, has died. She was 71. Browne died on Saturday in New York City, The New York Times reports, noting that Browneâs brother, David Oppenheim, confirmed the death but did not give a cause.