Organize the following atoms according to increasing number of orbitals surrounding the nucleus: rubidium (rb), phosphorous (p), neon (ne), gallium (ga)

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

Fred is studying a substance that is made out of only one element. this means that

Butane gas reacts with oxygen gas to give carbon dioxide gas and water vapor (gas). if you mix butane and oxygen in the correct stoichiometric ratio, and if the total pressure of the mixture is 390 mmhg, what is the pressure (in mmhg) of water vapor after the reaction is completed (temperature and volume do not change).