## Problem 11.33

aless_wu
Posts: 5
Joined: Fri Jun 23, 2017 11:39 am

### Problem 11.33

I can sort of see how the value 6.9 was calculated, but I'm having a little trouble understanding why the top values are something like 1.0x10^-4 instead of the given value 0.1 mmol. Is there a specific unit being used for this generally? Hope that made sense.

Ricky Z1D
Posts: 20
Joined: Fri Jun 23, 2017 11:39 am

### Re: Problem 11.33

As you have written out, the problem gave .1 mmol (millimoles). You want to convert moles to concentration which is moles/Liters. Liters is already in the correct units of .5 liters (rather than milliliter). So you have to convert .1 mmol to mols before calculating. So that is .1 mmol * 10-3 or 1 * 10-4 mols.