[Answer] Carbon dioxide is heated at 100 kPa. What should the temperature be to see a mole fraction of CO as 0.25? For that temperature what will the mole fraction of CO be if the pressure is 200 kPa?

Answer: A car mechanic is working in a shop whose interior space is not heated. Comfort for the mechanic is provided by two radiant heaters that radiate heat at a total rate of 4 kJ/s. About 5 percent of this heat strikes the mechanic directly. The shop and its surfaces can be assumed to be at the ambient temperature and the emissivity and absorptivity of the mechanic can be taken to be 0.95 and the surface area to be $1.8 m^2.$ The mechanic is generating heat at a rate of 350 W half of which is latent and is wearing medium clothing with a thermal resistance of 0.7 clo. Determine the lowest ambient temperature in which the mechanic can work comfortably.

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Carbon dioxide is heated at 100 kPa. What should the temperature be to see a mole fraction of CO as 0.25? For that temperature what will the mole fraction of CO be if the pressure is 200 kPa? Natural gas (also called fossil gas; sometimes just gas) is a naturally occurring hydrocar...

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