Diameter of a single hydrogen atom = 212 pm
Calculating the length of a row of [tex]6.02*10^{23}[/tex] Hydrogen atoms:
[tex]6.02*10^{23}[/tex] Hydrogen atoms * [tex]\frac{212pm}{1 H atom}[/tex]
= [tex]1.276 * 10^{26} pm[/tex]
Converting the length from pm to km:
The conversion factor for converting pm to m is [tex]1 m = 10^{12}pm[/tex]
The conversion factor from m to km is [tex]1 km = 10^{3}m[/tex]
[tex]1.276 * 10^{26} pm[/tex] *[tex]\frac{1 m}{10^{12}pm }[/tex]*[tex]\frac{1 km}{1000 m}[/tex] = [tex]1.276 * 10^{11} km[/tex]
Therefore, [tex]1.276 * 10^{11} km[/tex] is the distance in kilometers when [tex]6.02*10^{23}[/tex] Hydrogen atoms are placed in a row.
