Question

What is the number of moles in 3.2 x 10^24 atoms of nitrogen?

A. 1.9 moles
B. 5.3 moles
C. 9.5 moles
D. 19.2 moles

Answer 1

Converting Between Moles and Atoms

To convert from molecules/atoms to moles, divide by Avogadro's Number:

`6.02*10^(23)`

Solving the Question

We're given:

• 
  `3.2*10^(24)` atoms

Divide by Avogadro's Number:

`(3.2*10^(24))/(6.02*10^(23))`

`= 5.3`

Answer

B. 5.3 moles