Hwk3B - (a) What is the nal pressure of the ethane in the...

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PHYS 153 Homework 3B Problem 1 At an altitude of 11 , 000 m (a typical cruising altitude for a jet airliner), the air temperature is - 56 . 5 C and the air density is 0 . 364 kg / m 3 . What is the pressure of the atmosphere at that altitude? Problem 2 A flask with a volume of 1 . 50 L, provided with a stopcock, contains ethane gas (C 2 H 6 ) at 300 K and atmospheric pressure (1 . 013 × 10 5 Pa). The molar mass of ethane is 30 . 1 g / mol. The system is warmed to a temperature of 380 K, with the stopcock open to the atmosphere. The stopcock is then closed, and the flask is cooled to its original temperature.
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Unformatted text preview: (a) What is the nal pressure of the ethane in the ask? (b) How many grams of ethane remain in the ask? Problem 3 The gure shows two dierent processes by which 80 mol of gas move from state 1 to state 2. The dashed line is an isotherm. (a) What is the temperature of the isothermal process? (b) What maximum temperature is reached along the straight-line process? 1 - 1...
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