Which inert gas with a density 2.8 that of air was discovered by Ramsay and Travers in 1895?
which inert gas with a density 2.8 that of air was discovered by ramsay and travers in 1895
FreebaseQA-train-15676.P0
ramsay
william ramsay
m.0cxfh
chemistry.element_discoverer.discovered
m.0286yf3
krypton