The triple point of water is:
Correct answer: C. 273.16°C
- A. 273.16 K
- B. 273.16°F
- C. 273.16°C
- D. 270°C
Explanation
The triple point of water is the temperature and pressure at which water can coexist in all three phases: solid, liquid, and vapor. Its temperature is precisely 273.16 Kelvin or 0.01°C.
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Thermal equilibrium means that bodies in contact have the same temperature and no net heat flows between them. The topic distinguishes heat from temperature, uses the zeroth law of thermodynamics, and covers heat transfer, specific heat capacity, thermal expansion and the conditions for reaching equilibrium.
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