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Internal heat of ideal gass

  • #1
323
15

Homework Statement


An ideal gass is at constant volume risen to a new pressure level of ##P_f##. Find te expression for the total heat brought to the system.

Homework Equations


3. The Attempt at a Solution [/B]
So ##PV=nRT## and ##E=Q## ##Q=C_v(T_f-T_i)## so i just have to find ##(P_f-P_i)V=nR(Tf-Ti)## with the last term being what i need...?
 

Answers and Replies

  • #2
19,918
4,095

Homework Statement


An ideal gass is at constant volume risen to a new pressure level of ##P_f##. Find te expression for the total heat brought to the system.

Homework Equations


3. The Attempt at a Solution [/B]
So ##PV=nRT## and ##E=Q## ##Q=C_v(T_f-T_i)## so i just have to find ##(P_f-P_i)V=nR(Tf-Ti)## with the last term being what i need...?
The equations you have written can be used, provided you write ##Q=nC_v(T_f-T_i)##, where Cv is the molar heat capacity and n is the number of moles.
 

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