Imagine you can take all the atoms in a single drop of water and put them on a single line as closely packed as they can be. How long would that line be in meters? There are approximately 1022 atoms in a droplet of water. a) 10^12 meters which is bigger than the distance between Sun and Earth. b) 10^20 meters, the size of a galaxy. c) 10^3 meters, this is one kilometer. d) 10^7 meters which is about the circumference of the Earth.

Question

Paola Steele

Physics

17 July, 13:49

Imagine you can take all the atoms in a single drop of water and put them on a single line as closely packed as they can be. How long would that line be in meters? There are approximately 1022 atoms in a droplet of water. a) 10^12 meters which is bigger than the distance between Sun and Earth. b) 10^20 meters, the size of a galaxy. c) 10^3 meters, this is one kilometer. d) 10^7 meters which is about the circumference of the Earth.

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Answers (1)

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Malachi · Answer 1

option a

Explanation:

Size of an atom (diameter) = 10⁻¹⁰ m

There are approximately 10²² atoms in a single drop of water. If they are put in a straight line, the length would be

l = diameter of an atom * number of atoms

l = 10²² * 10⁻¹⁰ m = 10¹² m

Distance between the Sun and the Earth is 1.47 * 10¹¹ m. The calculated length is greater than the distance between the Sun and the Earth.

Thus, option a is correct.