What mass in grams of the magnetic oxide of iron (Fe3O4) can be made from 23.0 g of pure iron and an excess of oxygen?

The equation is Fe+O2→Fe3O4 (not balanced)
Express the mass to three significant figures and include the appropriate units.

h let me think

m=9

step-by-step explanation:

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.