Posted by **Kayla** on Wednesday, March 9, 2011 at 8:37pm.

How many grams of a stock solution that is 92.5 percent h2s04 by mass would be needed to make 250 grams of a 35% by mass solution?

- high school chem -
**DrBob222**, Wednesday, March 9, 2011 at 8:48pm
g x % = g x %

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