Half atmospheric pressure is:
Correct answer: B. 50662 Pa
- A. 400 torr
- B. 50662 Pa
- C. 101.3 Pa
- D. 8.5 pounds
Explanation
Atmospheric pressure on sea level is 101,325 Pa/760 torr/14.7 pounds per inch. Half atmospheric pressure will be 50662 Pa/380 torr/7.35 pounds per inch. The closest to these values is option B, which is the correct option.
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About Standard Temperature and Pressure
Standard temperature and pressure provide reference conditions for gas calculations: 0°C or 273 K and, in the usual school convention, 1 atm pressure. Questions use these conditions to relate pressure, volume, temperature and amount of gas, including the molar volume of an ideal gas, about 22.4 dm³.
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