Homework Help: Chemistry

Posted by becs on Sunday, July 17, 2011 at 5:03pm.

To prepare a 400 mL solution of .7500 M NaC2H3O2, how many grams of NaC2H3O2 would be needed?

I am wondering if I set this up, I got an answer of .0435 g NaC2H3O2. But i'm not sure if that is right? Is that the correct answer?

Chemistry - DrBob222, Sunday, July 17, 2011 at 9:08pm
That isn't the answer I obtained.
How many moles will you need? That will be M x L = 0.7500M x 0.400L = 0.300 moles. How many grams is that?
grams = moles x molar mass NaC2H3O2 = ??

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