The gas in the discharge cell of a laser contains (in mole percent) 11% CO2, 5.3% N2, and 84% He.
(a) What is the molar mass of this mixture?
(b) Calculate the density of this gas mixture at 32°C and 758 mm Hg.
(c) What is the ratio of the density of this gas to that of air (MM = 29.0 g/mol) at the same conditions?
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