• Create Account

Submit your paper to J Biol Methods today!

# calculation from Molar to g/ml

3 replies to this topic

### #1 cellgene

cellgene

Enthusiast

• Active Members
• 31 posts
0
Neutral

Posted 09 May 2011 - 06:49 AM

Dear All,

The question may sound quite stupid, but a colleague of mine and me calculated several times and we cannot agree on this calculation. Therefore I would like to ask you if this calculation is correct.

We have a 2.5mM solution of a protein that is 25.9kDa.

25.9kDa=25900 g/mol = 25900 mg/mmol
2.5mM = 2.5 mmol/l

2.5*25900=64750 mg/l
so it is 64.75 mg/ml

do you agree?

thanks a lot for your help!

### #2 mdfenko

mdfenko

an elder emeritus

• Active Members
• 3,266 posts
198
Excellent

Posted 09 May 2011 - 07:00 AM

looks right to me

Edited by mdfenko, 09 May 2011 - 07:01 AM.

talent does what it can
genius does what it must
i do what i get paid to do

### #3 cellgene

cellgene

Enthusiast

• Active Members
• 31 posts
0
Neutral

Posted 09 May 2011 - 07:07 AM

looks right to me

she calculated 64,75 micrograms/ml

### #4 Prep!

Prep!

Am I me???!!!

• Active Members
• 517 posts
4
Neutral

Posted 09 May 2011 - 08:02 PM

ur answer is correct cellgene... i calculate like this

25900g - 1000mM
? - 2.5mM

64.75g - 2.5 mM - 1000 ml
? - 2.5 mM - 1ml