An iron ore sample contains Fe2O3 together with other substances.Reaction of the ore with CO produces iron metal:Fe2O31s2 + CO1g2¡Fe1s2 + CO21g2(a) Balance this equation.(b) Calculate the number of grams of CO that can reactwith 0.350 kg of Fe2O3.(c) Calculate the number of grams of Fe and the number ofgrams of CO2 formed when 0.350 kg of Fe2O3 reacts.(d) Show that your calculations in parts (b) and (c) are consistentwith the law of conservation of mass.

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.