Conceptual Check.
I. First Law of Thermodynamics is insufficient to explain why heat doesn’t flow from cold to hot.
II. An ideal gas thermometer measures temperature independent of the nature of the gas (at low pressures).
III. A refrigerator with a coefficient of performance of infinity is impossible.
IV. Absolute zero is the temperature at which the efficiency of a Carnot engine would be 100%.
V. Water at its triple point has a unique pressure and temperature.
