Balance the chemical equation given below, and determine the number of grams of MgO that are needed to produce 25.0 g of Fe2O3. Chemical Formula is
MgO(s) + Fe(s) → Fe2O3(s) + Mg(s)

The following transition occurs at a molecular level for a substance. what transition corresponds to this change in microscopic structure? the carbon dioxide molecules on the left are in a regular, tightly packed pattern. after heating, it becomes much lower density. a. melting b. boiling c. sublimation d. freezing