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Showing posts with label
First law of thermodynamics
.
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Showing posts with label
First law of thermodynamics
.
Show all posts
Thursday, October 1, 2020
Two mol of an ideal gas is expanded isothermally and reversibly at 300 K to twice the original volume. Calculate q, w, E, and H.
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1.5 mol of a perfect gas at 300 K is compressed reversibly and isothermally from a pressure of 1.01x10^5 N m^2 to 5.05x106 Nm^2. Calculate the amount of work done.
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The heat of combustion of napthalene (C10H8(s)) at constant volume was measured to be 5133 kJ mol^1 at 298K. Calculate the value of enthalpy change (Given R = 8.314 JK^1 mol^1).
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A sample of gas is compressed by an average pressure of 0.50 atmosphere so as to decrease its volume from 400cm^3 to 200cm^3. During the process 8.00 J of heat flows out to surroundings. Calculate the change in internal energy of the system.
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