Re: How many moles (molecular terms)of horses to reach

The moon is, on average, 384,400 km from the Earth. Most horses range between 14 and 16 hands at the shoulders (a hand is 4 inches, or 10.2 centimeters). Therefore, the distance from the Earth to the moon is about 256,000,000 or 2.56 x 10⁸ horses. A mole is defined by Avogadro's number as containing 6.02 x 10²³ molecules. If we divide the latter by the former, we see that a mole of horses standing on each other shoulders could stretch to the moon and back 1.18 x 10¹⁵ or 1,180,000,000,000,000 or 1.18 quadrillion times. On the other hand, the distance from the Earth to the Sun is 150 million km, or 1 x 10¹¹ horses, so a mole of horses could only make that round trip 3 x 10¹² or 3,000,000,000,000 or 3 trillion times.

Maybe you should use a unit of measurement smaller than a horse...