Question

A nanometer(nm ) is one billionth of a meter (1 nm=10-9m). If 100 million atoms make a row 1 cm in length what is the diameter of one in nanometers?

Answer 1

length= .01m/100E6= 1E-2*1E-8=1E-10m=.1E-9

so 1/10 of a nanometer.