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18 Nov 2019
2 and 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 23.5 degree C to 22.6 degree C. What is the total change the internal energy for the system? Assume the specific heat capacity of the piston is 0.88 J/g, degree C and it has a mass of 1.25 kg. Real gasses do not behave exactly as the ideal gas las 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 b takes into account the volume of a molecule. Calculate the work done during the reversible isothermal expansion of 3.7 moles of ammonia from 81 L to 170 L at 300. K. for ammonia, a = 4.225 l^2 bar mol^-1 and b = 0.0371L/mol
2 and 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 23.5 degree C to 22.6 degree C. What is the total change the internal energy for the system? Assume the specific heat capacity of the piston is 0.88 J/g, degree C and it has a mass of 1.25 kg. Real gasses do not behave exactly as the ideal gas las 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 b takes into account the volume of a molecule. Calculate the work done during the reversible isothermal expansion of 3.7 moles of ammonia from 81 L to 170 L at 300. K. for ammonia, a = 4.225 l^2 bar mol^-1 and b = 0.0371L/mol
Nestor RutherfordLv2
1 Feb 2019