Problem: A 49.29 gram sample of chromium is heated in the presence of excess oxygen. A metal oxide is formed with a mass of 72.03 g. Determine the empirical formula of the metal oxide. Enter the elements in the order Cr, O.

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A 49.29 gram sample of chromium is heated in the presence of excess oxygen. A metal oxide is formed with a mass of 72.03 g. Determine the empirical formula of the metal oxide. 

Enter the elements in the order Cr, O.

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