Find heat transfer during process and change of entropy air
A mass of 1 kg of air contained in a cylinder at 1.5 MPa, 1000 K, expands in a reversible isothermal process to a volume 10 times larger. Calculate the heat transfer during the process and the change of entropy of the air.
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The loading on the piston is such that the product PV is a constant. Assuming that the room temperature is 20°C, Show that this process does not violate the second law.
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A mass of 1 kg of air contained in a cylinder at 1.5 MPa, 1000 K, expands in a reversible isothermal process to a volume 10 times larger.
Calculate the hydrogen ion concentration in mol/L for each of the following solutions.(a) 2.42, (b) a solution whose pH is 16.00, (c) a solution whose hydroxide concentration is 3.7x 10-9 M
A stone is thrown horizontally with an initial speed of 10 m/s from the edge of a cliff. A stop watch measures the stone's trajectory time from the top of the cliff to the bottom to be 4.3 s. What is the height of the cliff?
A Closed system undergoes a reversible process from 220 K to 440 K with the heat transferred per degree of temperature being given by dQ/dT = 0.45 kJ/K and the work by dW/dT = 0.12 kJ/K.
The equilibrium constant Kp is 158. Analysis shows that the partial preassure of O2 is 0.25 atm at equilibrium. Calculate the pressure of NO and NO2 in the mixture.
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