⚠️please help :) In a blast furnace, iron and carbon monoxide are produce from the reaction of iron (III) oxide (Fe203( and carbon. How many grams of iron are formed when 155 g iron (III) oxide reacts with an excess of carbon?

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.