I need help completing this work. I think the work I have is correct. Need the q
ID: 1326547 • Letter: I
Question
I need help completing this work. I think the work I have is correct. Need the questions answered and please show all work.
Thermodynamics
Lab 8(See Chapter 15) involves using thermodynamics to calculate the work done in specific processes and then use this to determine the change in internal energy or the heat transfer via the first law of thermodynamics (DeltaE = Q W). First start with an isothermal expansion at 2.0 atm from 1.0 L to 4.0 L. If this now is adiabatically compressed back to its original volume, what is the change in internal energy here? Also what are some examples of these processes?
W= PDV
W= (2.0 atm) (4.0 L-1.0 L) =
W = 2(1.013x105N/m2) (.004m3-.001m3) =
W = 2.026x105N/m2 * .003m3=
W=
DeltaE =
Q =
DeltaU = -W
What is an adiabatic process? No change in heat.
What is isothermal? No change in internal temperature or energy.
Explanation / Answer
W= PDV
W= (2.0 atm) (4.0 L-1.0 L)
W = 2(1.013x105N/m2) (.004m3-.001m3)
W = 2.026x105N/m2 * .003m3
W=607.8J
in isothermal expansion internal energy remains constant E=0
DeltaE =Q+W
first law changes as Q = -W = -607.8J
since adiabatic process there is no change in heat Q =0
DeltaU = -W=-607.8J
What is an adiabatic process? No change in heat.
What is isothermal? No change in internal temperature or energy(temperature remains constant).
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.