Who formulated the third law of thermodynamics in 1906?
Answer
Walther Nernst
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In the common sign convention, what equation states the first law as change in internal energy equals heat added minus work done?
Answer
ΔU = Q - W
Which thermodynamic identity relates internal energy changes to entropy, volume, and particle number?
Answer
fundamental thermodynamic relation
What is the name of the temperature at which a gas has zero pressure by extrapolation on the Celsius scale?
Answer
absolute zero
Who formulated the theorem that no engine can be more efficient than a reversible engine between the same reservoirs?
Answer
Sadi Carnot
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Which thermodynamic identity relates internal energy changes to entropy, volume, and particle number?
Answer
fundamental thermodynamic relation
What is the ratio of work output to heat input called for a heat engine?
Answer
thermal efficiency
The relation dS = δQrev/T defines entropy change for what kind of process?
Answer
reversible process
Which theorem states that the cyclic integral of δQ/T is never positive?
Answer
Clausius theorem