# Calculate the height of the atmosphere at the point where the pressure is one tenth

Calculate the height of the atmosphere at the point where the pressure is one tenth of atmospheric pressure. Assume a constant temperature of 491.76 °R and assume that the ideal gas law applies. For atmospheric pressure on the surface of the earth, use 14.7 psia. Show your answer in miles. Note that you need the molecular weight of air which can be found in Page 40 of Himmelblau and Riggs (29g⁄(g mole)). In order for your units to be consistent, you need a conversion factor (gc) used in the American Engineering System which can be found in Page 21 of Himmelblau and Riggs

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