Posted by Helpplease on Sunday, October 24, 2010 at 3:17pm.
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Okay, sorry....I posted it again correctly :)
Use the combined mass (250 g) and the density of the solution (which you were given) to compute the volume of the solution. Once you have the mass of perchloric acid and the total volume, molarity is easily computed.
The formula for percholroic acid is HClO4. You will need that for the molecular weight, if you are computing the molarity of the solution.
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