Homework Help: Chemistry - Stoichiometry

Posted by Kevin on Thursday, August 25, 2005 at 2:49pm.

16.2g of magnesium reacts exactly with 25.3g of fluorine to produce magnesium fluoride, the only product.
How many grams of magnesium fluoride could be produced from the reaction of 10.5g of magnesium with excess fluorine.

This is simple if you use ratios...

You know that 16.2 g Mg produced (16.2+25.3)g of MgF2.

16.2/(16.2+25.3)=10/x

solve for x.

What mass of zinc chloride can be produced by treating 10.0 g of hydrochloric acid with zinc metal?

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