To find out how many grams of iron oxide will be made, you have to calculate the number of moles of each reactant. Then, using the stoichiometry of the balanced chemical equation, determine the mole ratio between iron and iron oxide. Finally, convert the moles of iron oxide to grams using its molar mass. The law of conservation of mass says that the total mass of the reactants must equal the total mass of the products, so the calculated mass of iron oxide should be consistent with this principle.
That is correct! By calculating the number of moles of each reactant and using the stoichiometry of the balanced equation, you can determine the mole ratio between iron and iron oxide. This mole ratio will allow you to convert the moles of iron oxide to grams using its molar mass. As a result, you will have the mass of iron oxide that will be produced.
The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction. Therefore, the total mass of the reactants must equal the total mass of the products. By following the steps above, the calculated mass of iron oxide should align with this principle.