Question

A crystallographer measures the horizontal spacing between molecules in a crystal. The spacing is

14.4
nm
. What is the total width of a crystal in millimeters
105
molecules across? Write your answer as a decimal.

Answer 1

The spacing is 14.4 nm (nanometers).
It is 14.4 * 10^(-9) m
And 1 mm = 1 * 10^(-3) m
14.4 nm * 105 = 1,512 nm = 1.512 micrometers = 0.001512 mm
Or : 1.512 * 10^(-3) mm
Answer: The total width of crystal is 0.001512 mm.