One mole of neon gas is heated from 357 Kto 424 K at constant pressure. (a) Calc

Question

One mole of neon gas is heated from 357 Kto 424 K at constant pressure. (a) Calculate the energy Q transferredto the gas.
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(b) Calculate the change in the internal energy of the gas.
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(c) Calculate the work done on the gas. Note that neon has a molarspecific heat of c = 20.79 J/mol·K for a constantpressure process.
J (a) Calculate the energy Q transferredto the gas.
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(b) Calculate the change in the internal energy of the gas.
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(c) Calculate the work done on the gas. Note that neon has a molarspecific heat of c = 20.79 J/mol·K for a constantpressure process.
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Explanation / Answer

a) The energy Q transferred to the gas is            Q = nCp T                 = (9)(20.79 J/mol·K)(424K - 357K) b) The change in the internal energy of the gas is                U = (9)(8.31 J/mol.K - 20.79 J/mol·K)(424K - 357K) c) The work done on the gas is              W = Q - U Substitute the values.

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