OnlineConversion Forums Welcome to OnlineConversion.com Forums

Go Back   OnlineConversion Forums > Main Forums > Convert and Calculate

Convert and Calculate Post any conversion related questions and discussions here. If you're having trouble converting something, this is where you should post.
* Guest Posting is allowed.

Reply
 
Thread Tools Display Modes
  #1  
Old 03-28-2009, 11:51 AM
Unregistered
Guest
 
Posts: n/a
Default picomoles to nanograms

Hi - this is a silly question but I rarely do these convertions. Trying to convert 44 pmol/L of estradiol is in ng/L. The molarity of estradiol is 1pg/mL = 3.671/L
Reply With Quote
  #2  
Old 03-28-2009, 01:01 PM
JohnS JohnS is offline
Moderator
Long Time Member The Golden Calculator Award Over 5000 Posts
 
Join Date: Dec 2007
Location: SE Michigan, USA
Posts: 9,536
Rep Power: 19
JohnS will become famous soon enough
Default Re: picomoles to nanograms

Quote:
Originally Posted by Unregistered
Hi - this is a silly question but I rarely do these convertions. Trying to convert 44 pmol/L of estradiol is in ng/L. The molarity of estradiol is 1pg/mL = 3.671/L
Per Wikipedia, the molar mass of estradiol is 272.38 g/mol
So 44 pmol/L x 272.38 g/mol = 11985 pg/L = 11.985 ng/L
(it should probably round to 12 ng/L).
Reply With Quote
  #3  
Old 03-28-2009, 03:05 PM
Unregistered
Guest
 
Posts: n/a
Default Re: picomoles to nanograms

Thanks! - so you don't have to convert the molarity to picomoles? you can just use g/mol?
Reply With Quote
  #4  
Old 03-28-2009, 03:12 PM
JohnS JohnS is offline
Moderator
Long Time Member The Golden Calculator Award Over 5000 Posts
 
Join Date: Dec 2007
Location: SE Michigan, USA
Posts: 9,536
Rep Power: 19
JohnS will become famous soon enough
Default Re: picomoles to nanograms

Quote:
Originally Posted by Unregistered
Thanks! - so you don't have to convert the molarity to picomoles? you can just use g/mol?
Molarity is just a shorthand for moles per liter, which is what you started with. The 44 pmol/L could also be expressed as 44 picomolar.

Conversion between grams and moles ALWAYS involves the molar mass. You may also have some prefixes to resolve. The 3.671 figure you mentioned is actually 1000 (from a prefix change) divided by 272.38.
Reply With Quote
  #5  
Old 03-28-2009, 03:28 PM
Unregistered
Guest
 
Posts: n/a
Red face Re: picomoles to nanograms

thanks for the lesson. much appreciated.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -8. The time now is 06:47 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 1997-2005, 2007, OnlineConversion.com