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.
An lady bug walks 20.0 cm in a direction of 30.00 North of East. She then turns and walks 30.0 cm North, turns and walks 10.0 cm West. How far is the lady bug from where she started.
Damien is 68 inches tall. Use the equation of the regression-line exactly as given in the first question to predict the height of his sister Tonya. Give your answer to two decimal places.
Find the standard deviation of the distribution in the following situations. (a) MENSA is an organization whose members have IQs in the top 2% of the population. IQs are normally distributed with mean 100, and the minimum IQ score required for adm
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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