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April 25, 2014

Homework Help: chemistry

Posted by josh on Monday, June 13, 2011 at 9:28pm.

1. 15.0 g of sodium sulfate are dissolved in water to form 400.0 g of solution. The density of the solution is 1.056 g/mL at 25oC.
a. What is the mass percent (%(w/w)) of sodium sulfate?
b. What is the molarity of sodium sulfate?
c. What is the molarity of the sodium ion?
d. How many parts per million of sodium ion in the solution?
e. How many equivalents of sodium ion are present in the solution?

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