If the diameter of a helium atom is about 0.064 nm, how many helium atoms lined up side to side would span the diameter of a human hair, which is about 0.1 mm?

Question

Quizplus · Accepted Answer

To find out how many helium atoms would span the diameter of a human hair, we convert the diameter of the hair to nanometers (nm) since the diameter of a helium atom is given in nm. 0.1 mm is equal to 100,000 nm (since 1 mm = 1,000 nm). Dividing the diameter of the hair by the diameter of a helium atom gives: 100,000 nm / 0.064 nm = 1,562,500 helium atoms.

If the Diameter of a Helium Atom Is About 0