Chemistry The density of a gas is 1.964 g dm-3 at 273 K and 76 cm Hg. The gas is _________? Options:A. CH4B. CO2C. C2H4D. XeView AnswerB. CO2 Continue Reading Previous: The energy of one mole of photons of radiation, whose frequency is 4Next: The most appropriate method for separating a large quantity of a mixture of nonvolatile, nonpolar organic compounds would be__________?