What is the molar mass of diazepam (Valium®) if 0.05570 mol weighs 15.86 g?
I'm stuck on this and have no clue how to start. Much help would be appreciated.
2007-02-06 13:43:33 · 2 answers · asked by DJ 1 in Science & Mathematics ➔ Chemistry
Thanks sillyturtledad, what I was doing was 0.05570 mol / 15.86 g instead 15.86 g / 0.05570 mol. I just had it backwards.
2007-02-06 14:17:55 · update #1
I don't have a calculator handy, but I can tell you how to set things up. The main thing is to realize that the units for molar mass is grams per mole of substance, or g/mol
now, you have the grams. you have the # of moles. Simply divide 15.86 g by 0.05570 moles. That will give you the answer and a unit of g/mol
2007-02-06 13:51:03 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Set up a simple ratio
1 mol is to "X" grams as 0.05570 mol is to 15.86 grams
2007-02-06 13:48:28 · answer #2 · answered by reb1240 7 · 0⤊ 0⤋