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Solution: Section 17.3 HeatSection 17.4 The First Law of
Chapter 17, Problem 9E(choose chapter or problem)
Problem 9E
Section 17.3 Heat
Section 17.4 The First Law of Thermodynamics
A gas is compressed from 600 cm3 to 200 cm3 at a constant pressure of 400 kPa. At the same time, 100 J of heat energy is transferred out of the gas. What is the change in thermal energy of the gas during this process?
Questions & Answers
QUESTION:
Problem 9E
Section 17.3 Heat
Section 17.4 The First Law of Thermodynamics
A gas is compressed from 600 cm3 to 200 cm3 at a constant pressure of 400 kPa. At the same time, 100 J of heat energy is transferred out of the gas. What is the change in thermal energy of the gas during this process?
ANSWER:
Step 1 of 2
We have to find the change in thermal energy of the gas during the process.
The gas is being compressed from \(600 \mathrm{~cm}^{3}\) to \(200 \mathrm{~cm}^{3}\) at constant pressure. Hence, work done in the process is positive \((W>0)\) and the process is isobaric.
The change in themal energy can be found using the first law of thermodynamics.
\(\Delta E_{T h}=W+Q\)
Where,
\(Q\) = energy transferred out
of gas = 
\(W\) = Work done on the
gas in J