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Convert pmol to mg? - (Nov/22/2009 )

Okay, so I am using amyloid beta 25-35 at a concentration of 48 pmol/mm^2 (this is cell culture by the way). I know the molecular weight is 1060.3. How do i convert this to grams/milligrams?
If you could direct me to a webpage or some kind of guide, that would be gret

-prof. moriarty-

might help...

-Pradeep Iyer-

Number of moles= Volume * Concentration, and Mass = Number of moles * Molar mass.

Two very simple calculations... just remember to keep your units consistent.