How Many Atoms Are in a Drop of Mercury That $\pi$

question 19

Multiple Choice

How many atoms are in a drop of mercury that has a diameter of 1.0 mm? (Volume of a sphere is 4 $\pi$ r³/3; density of mercury = 13.6 g/cm³)

• A) 2.1 * 10¹⁹
• B) 1.7 *10²⁰
• C) 2.1 *10²²
• D) 1.7 * 10²³
• E) None of these choices is correct.

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