Concentrations/Dilutions Help
Moderators: honeev, Leonid, amiradm, BioTeam
Concentrations/Dilutions Help
Hey guys,
I am doing some revision for my cell bio class.
I Can't get my head around dilutions.
I have a question that goes
If you add 15 micro liters of a 10mM solution of glucose to 100mL water, what is the molarity of the solution.
Can some one please explain how I go about doing questions like these?
I know molarity is Moles of solute/Litres of solution. But i am confused which is which? Can someone please take me through how to approach questions like these?
I am doing some revision for my cell bio class.
I Can't get my head around dilutions.
I have a question that goes
If you add 15 micro liters of a 10mM solution of glucose to 100mL water, what is the molarity of the solution.
Can some one please explain how I go about doing questions like these?
I know molarity is Moles of solute/Litres of solution. But i am confused which is which? Can someone please take me through how to approach questions like these?
Are you sure about the units?
You add 15 ul to 100 ml, that is, you dilute it ~6666.6 times (100ml/15ul), so the concentration will be ~6666.6 times smaller
In this case, you can neglect the volume of added glucose, as it is only 15 ul vs. 100 ml
You add 15 ul to 100 ml, that is, you dilute it ~6666.6 times (100ml/15ul), so the concentration will be ~6666.6 times smaller

In this case, you can neglect the volume of added glucose, as it is only 15 ul vs. 100 ml

http://www.biolib.cz/en/main/
Cis or trans? That's what matters.
Cis or trans? That's what matters.
Who is online
Users browsing this forum: No registered users and 2 guests