Standard condition STP refer to a gas at ___________________?
Correct answer: D. all of the aboveTracking Hyperlocal Weather Forecasts
- A. 76cm 0°C
- B. 760mm 273K
- C. 1atm 273K
- D. all of the aboveTracking Hyperlocal Weather Forecasts
Explanation
These are equivalent descriptions of standard temperature and pressure: 76 cm Hg = 760 mm Hg = 1 atm, and 0°C = 273 K. Therefore, options a, b and c all describe STP, making "all of the above" correct. A student may select only 1 atm and 273 K because that is the most familiar form, overlooking the equivalent mercury-pressure form.
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About Thermal Equilibrium and Heat
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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