# How do you convert #5.3 * 10^25# molecules of #CO_2# to moles?

##### 1 Answer

Jun 23, 2016

There are **88 moles** of

#### Explanation:

In order to go from molecules of

I usually set up dimensional analysis questions like this:

Quantity sought = Quantity given x conversion factor

- Quantity sought
#rarr# mol#CO_2# - Quantity given
#rarr# #5.3xx10^(25)# molecules - Conversion factor
#rarr# #(1mol)/(6.02xx10^(23))#

Now we just plug the values into the format I have above (make sure your units cancel out as you are going through this process, that's how you know if you are doing the calculations correctly or not):

moles

moles **88 mol**