Question

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.

Answer 1

option a

Step-by-step 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.