in other words, they were there in the entropy contribution in the gas phase as well, in the pure gas.
换句话说,它们也对熵有贡献,在气相时在纯气体时。
you take that gas phase mixture, and you condense it in your condenser.
然后用这新得到的气相混合物,在冷凝器中冷凝。
because only atomic hydrogen has that set of lines which means i could then take the spectra of gas phase species and use that information to identify.