(c) Calculate the mean molecular mass of the following samples of neutral gas: (i) fully ionized hydrogen and helium in
Posted: Wed Jun 08, 2022 11:15 am
(c) Calculate the mean molecular mass of the following samples of neutral gas: (i) fully ionized hydrogen and helium in the proportion 90% H and 10% He by number (i.e. a somewhat enriched primordial nuclear abundance); (ii) fully ionized helium. (You may assume that the masses of helium and hydrogen nuclei are related by mHe~ 4mp ~4u and that the mass of an electron me is negligible.) (8 marks)