Posted by confuzzled on Sunday, September 18, 2011 at 5:51pm.
What is the molarity of a solution of sucrose that has a density of 1.24g/ml and a molecular weight of 342.3g/mol
Chemistry - DrBob222, Sunday, September 18, 2011 at 6:07pm
g sucrose in 1000 mL of the soln =
1.24g/mL x 1000 mL = 1240 grams.
moles = grams/molar mass
and M = moles/L soln.
Chemistry - angel, Sunday, September 18, 2011 at 6:28pm
Thank you DrBob222!
For anyone else with the same problem here is how I did it following the above instructions
1240g in 1L
Chemistry - confuzzled, Sunday, September 18, 2011 at 6:38pm
thanks angel. i got this too
Chemistry - DrBob222, Sunday, September 18, 2011 at 6:40pm
You are allowed 3 significant figures (1.24) so your answer should be 3.6225M which round to 3 s.f. to 3.62 M.
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