A gas exerts a pressure of 380 mm Hg. What is this pressure in kilopascals (1 atm = 760 mm Hg = 101.325 kPa)?
Correct answer B. 50.7 kPa
Explanation
380 mm Hg = 380/760 atm = 0.500 atm. In kPa: 0.500 × 101.325 = 50.7 kPa. Forgetting to convert to atmospheres first gives an unreasonable value.
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