ISEE Reading Question 165: Answer and Explanation
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Question: 165
4. The mean molecular weight of the atmosphere at sea level is closest to
- A. 1 atomic mass unit.
- B. 4 atomic mass units.
- C. 29 atomic mass units.
- D. 36 atomic mass units.
Correct Answer: C
Explanation:
The correct answer is (C). The second paragraph of the passage lists the mean molecular weight of the atmosphere at sea level as 29 atomic mass units (amu).