Your doctor has diagnosed you as being anemic—that is, as having too little iron in your blood. At the drugstore, you find two iron-containing dietary supplements: one with iron(II) sulfate, FeSO4, and the other with iron(II) gluconate, Fe(C6H11O7)2. If you take 100. mg of each compound, which will deliver more atoms of iron? (a) What are the molecular weights of the two compounds? (b) How many moles of each compound are contained in 100. mg? (c) How many moles of Fe are in one mole of the compound? (d) If you take 100. mg of each compound, which will deliver more atoms of iron?

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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.