Help Converting uL to Moles (Organic Chemistry)?

Chris

New member
I'm trying to find the amount of moles of HCl in 875.0 uL of 12M HCl.

I'm not sure how to convert microlitres to grams considering one defines mass and the other volume. Once I found the amountof HCl in grams and divided by the molecular weight to find the number of moles in HCl would I simply multiple by 12 given the question ask "of 12M HCl"?
 
You need to look up the molar mass of H and Cl. Those are expressed in g/mol. You can find those on a periodic table.

M does not define mass. It defines quantity (unit-less count) for a given volume.
M = mol/L (the latter is the preferred usage under newer IUPAC standards for the very problems you're having)
 
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