Homework Help: chem

Posted by hannah on Monday, December 6, 2010 at 5:02pm.

can you explain?
For each of the reactions shown, calculate how many grams of the product form when 16.8 g of the reactant in bold completely reacts. Assume that there is more than enough of the other reactant.

4 Cr(s) + 3 O2(g) 2 Cr2O3(s)

thanks

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