November 28, 2015

Homework Help: AP Chem

Posted by Melissa on Wednesday, February 2, 2011 at 7:06pm.

The formula for epson salts is MgSO4*7H2O. If 1.250 g of the compound is dissolved in water, calculate the number of milliliters of 0.200 M Ba(NO3)2 that would be required to precipitate all of the sulfate ions as barium sulfate. Make the same determination for 1.000 g of alum.

I don't understand where to even start with this problem. Please help me.

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