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April 16, 2014

Homework Help: Chemistry

Posted by JC on Wednesday, October 1, 2008 at 1:41am.

You are going to be provided with 1 0.50 g sample of magnesium oxide. Treatment of this sample with hydrochloric acid (HCl) will take all of the MAGNESIUM in the oxide and change it into magnesium chloride, MgCl2

You will add 100 ml of 1.0 M HCl to the 0.50 g of magnesium oxide in a 250 ml beaker. After the bubbling goes away, you will need to boil off the water until the MgCl2 product in the beaker has come to constant mass.

A. What data will you need to determine the mass of MgCl2 you recover?

B. How will you determine the amount of Mg present in your product?

C. How will you use your knowledge of the amount of Mg to determine the empirical formula of magnesium oxide?

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