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.
J

(b) Calculate the change in the internal energy of thegas. J

(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.
J

(b) Calculate the change in the internal energy of thegas. J

(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

Explanation / Answer

   a.   Energytransferred   Q   =   m* c * T   =   1 * 20.79 * (424 -357)   =   1392.93   J    b.   Change in internalenergy   U   =   m* cv * T          cv   =   c/    =   20.79 /1.67   =   12.47   J/mol-K          U   =   1* 12.47 * (424 - 357)   =   835.49   J    c.   According to firstlaw       workdone   W   =   Q   -   U   =   1392.95   -   835.49   =   557.46   J

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