Homework Help: Chemistry

Posted by Kimber on Thursday, October 25, 2012 at 11:22pm.

How many milliliters of 0.225 M NH4C2H3O2 are needed to make 750.0 mL of 0.1667 M NH4C2H3O2?

Chemistry - DrBob222, Thursday, October 25, 2012 at 11:39pm
dilution formula
Chemistry - Kimber, Friday, October 26, 2012 at 12:14am
ok so did I do it right??

0.225(750.0)=0.1667(v)
168.75/0.1667=1012.3??
Chemistry - Kimber, Friday, October 26, 2012 at 12:14am
ok so did I do it right??

0.225(750.0)=0.1667(v)
168.75/0.1667=1012.3??
Chemistry - DrBob222, Friday, October 26, 2012 at 12:53am
Isn't this the same as the above?
0.225 x mL = 0.1667 x 750 mL.
mL = ?
The problem asks for "how many mL of 0.225M must ......."
so you have the v (unknown) in the wrong place.

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