You have 1.6 x 1024 atoms of Bismuth. How many moles are present?

1 Answer
Feb 21, 2018

2.66 moles

Explanation:

In order to get from particles to moles or moles to particles, use Avogadro's number (#6.022*10^23#). This number represents the amount of particles of anything in a mole of that substance.

(In other words, a mole of anything is just #6.022*10^23# of that thing. A mole of elephants is #6.022*10^23# elephants. A mole of oxygen atoms is #6.022*10^23# oxygen atoms.)

#mol\es -> particl\es#: multiply by Avogadro's number
#particl\es -> mol\es#: divide by Avogadro's number

We'll divide #(1.6*10^24)/(6.022*10^23)#, and this will give us #~~2.66#.