Homework Help: Chemistry

Posted by c on Monday, November 9, 2009 at 12:12am.

Given a 10.0g sample of MgCO3*5H2O, what weight of anhydrous magnesium carbonate can be obtained after driving off the water?

The GFM of the sample is 174.3amu. Now.. how do I go about finding the weight of the magnesium carbonate?

Chemistry - manisha, Monday, November 9, 2009 at 1:09am
magnesium carbonate consist of one atom of Mg,one atom of c,three atoms of O.SO weight of magnesium carbonate is
24 + 12 + (3*16)
=24 +12+ 48
=84

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