November 25, 2015

Homework Help: chemistry

Posted by Kristen on Monday, July 5, 2010 at 10:31pm.

When magnesium is heated in air, it reacts with oxygen to form magnesium oxide.
2Mg + O2 --> 2MgO
If the mass of the magnesium increases by 0.335 g, how many grams of magnesium reacted?
A. 0.882
B. 0.441
C. 0.509
D. 1.02
E. Not enough Info

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