Questions and answers on how to convert things from one unit or system to another
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Wed Jun 01, 2005 8:01 am
How do I convert u(micro)mol/L to mcg.dL?
As in Australian ref ranges for DHEAs
Wed Jun 01, 2005 5:28 pm
You have to know the molar mass of the substance in question, grams/mole. If you know the chemical formula, you can add up the atomic weights of the constituent elements (and quantities). Then convert the grams to moles. I assume the conversion between liters and deciliters is no problem.
Thu Jun 02, 2005 3:51 pm
Thanks. Unfortunately my chemistry is greatly lacking. A have been told that the molecular weight of DHEAs is 384. Is this the molar mass? HOw do you convert to grams?
Fri Jun 10, 2005 6:17 pm
k wrote:Thanks. Unfortunately my chemistry is greatly lacking. A have been told that the molecular weight of DHEAs is 384. Is this the molar mass? How do you convert to grams?
Yes, the molar mass in grams is numerically equal to the molecular weight in atomic mass units (which have a new "official" name but are unchanged). So 384 g/mol in this case.
If you have the formula and a periodic table, you add up the amu's of all the atoms in the molecule.
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