Consider a gas mixture whose apparent molecular is 33. initially at 3 bar and 30

Question

Consider a gas mixture whose apparent molecular is 33. initially at 3 bar and 300 K, and occupying a volume of 0.1 m3. The gas undergoes an expansion during which the pressure-volume relation is pV1.3 = constant and the transfer by heat to the gas is 3.84 kJ. Assume the ideal gas model with cv = 0.6 + (2.5 Times 10-4) T, where T is in K and cv has units of kJ/kg K. Neglecting kinetic and potential energy effects, determine the final temperature, in K. the final pressure, in bar. the final volume, in m3. the work, in kJ. Helium (He) gas initially at 2 bar. 200 K undergoes a polytropic process, with n = k, to a final pressure of 14 bar. Determine the work and heat transfer for the process, each in kJ per kg of helium. Assume ideal gas behavior. Two uninsulated, rigid tanks contain air. Initially, tank A holds 1 lb of air at 1440degreeR, and tank B has 2 lb of air at 900degreeR. The initial pressure in each tank is 50 lbf/in.2 A valve in the line connecting the two tanks is opened and the contents are allowed to mix. Eventually, the contents of the tanks come to equilibrium at the temperature of the surroundings. 520degreeR. Assuming the ideal gas model, determine the amount of energy transfer by heat, in Btu, and the final pressure in lbf/in.2 Two kilograms of a gas with molecular weight 28 are contained in a closed, rigid tank fitted with an electric resistor.

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