MCAT General Chemistry Question 271: Answer and Explanation

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Question: 271

3. The summit of Mount Everest is 8.8 km above sea level. What is the approximate density of air at this point?

  • A. 0.2 kg/m3
  • B. 0.4 kg/m3
  • C. 0.8 kg/m3
  • D. 1.0 kg/m3

Correct Answer: B

Explanation:

B The passage states that the density of air is 1.2 kg/m3 and that the density drops by 50 percent every 5.5 km. Therefore, at 8.8 km, the density will be between 25 to 50 percent of the density at sea level, or 0.3–0.6 kg/m3. Choice B is the only answer in this range.

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