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Question

A mixture of nitrogen, helium, and neon gases is attached to an open manometer. The nitrogen exerts a pressure of 0.245 atm, and the helium exerts a pressure of 460. torr. If Patm=15.4 psi and the mercury level is 119 mm higher on the arm of the manometer open to the atmosphere, what is the pressure of the neon gas, in kPa?