Homework Help: physical chemistry

Posted by shafika on Saturday, January 30, 2010 at 3:43am.

How many grams of NaC2H3O2 (M = 82.034 g mol-1) should be dissolved in 400.0 g of water to prepare a solution which is 11.28 % NaC2H3O2 by mass?

physical chemistry - drwls, Saturday, January 30, 2010 at 6:13am
Solve this equation for X:

X / (400 + X) = 0.1128

400 + X is the total number of grams in the resulting mixture. You do not need to use the number of grams per mole.

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