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18 Nov 2019
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A gas within a piston expands from 0.255 L to 0.892 L against a constant external pressure of 0.987 atm. In this process, the piston cools from 25.5 degree C to 22.6 degree C. What is the total change in internal energy for the system? Assume the specific heat capacity of the piston is 088 J/g degree C and it has a mass of 1.25 kg. Meal gasses do not behave exactly as the ideal gas law would predict. One attempt to correct this is the Van Der Waals equation of state: The ideal gas law neglects intermolecular forces and the volume of a gas. The constant a corrects for the attraction between two molecules and the constant it takes into account the volume of a molecule. Calculate the work done during the reversible isothermal expansion of 1.7 moles of ammonia from R1 L be 170 L at 300. K For ammonia, a = 4.225 L^2 bar mol^2 and b = 0.037 L/mol
1 to 3
A gas within a piston expands from 0.255 L to 0.892 L against a constant external pressure of 0.987 atm. In this process, the piston cools from 25.5 degree C to 22.6 degree C. What is the total change in internal energy for the system? Assume the specific heat capacity of the piston is 088 J/g degree C and it has a mass of 1.25 kg. Meal gasses do not behave exactly as the ideal gas law would predict. One attempt to correct this is the Van Der Waals equation of state: The ideal gas law neglects intermolecular forces and the volume of a gas. The constant a corrects for the attraction between two molecules and the constant it takes into account the volume of a molecule. Calculate the work done during the reversible isothermal expansion of 1.7 moles of ammonia from R1 L be 170 L at 300. K For ammonia, a = 4.225 L^2 bar mol^2 and b = 0.037 L/mol