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Learn heat transfer, thermodynamics
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Module 7
The First Law of Thermodynamics and Sign Conventions
1
First Law of Thermodynamics Sign Conventions
Identify and apply both major sign conventions for the first law: ΔU = Q - W (physics/engineering) and ΔU = Q + W (chemistry).
2
Navigating Work and Heat Sign Conventions
Convert work and heat values between different sign conventions presented in problems.
3
Work Done on P-V Diagrams
Calculate work done by or on a gas from P-V diagrams, applying the correct sign for each convention.
4
Internal Energy Change in Ideal Gas Processes
Determine the change in internal energy for an ideal gas in various processes (ΔU = nCvΔT).
5
First Law of Thermodynamics: Solving for Unknowns
Apply the first law equation to solve for unknown quantities (Q, W, or ΔU) in a single thermodynamic process.
6
Analyzing Cyclic Processes
Analyze cyclic processes to calculate net work and net heat transfer over a full cycle.
7
Isothermal Free Expansion & the First Law
Apply the first law to the free expansion of a gas, justifying why work done is zero.
8
Adiabatic Free Expansion and Temperature Change
Analyze the temperature change (or lack thereof for an ideal gas) during an adiabatic free expansion.
Previous module
Real Gases and Deviations from Ideal Behavior
Next module
Thermodynamic Processes and Calculations