Calculate the number of moles containing each of the following and be sure to show step by step calculations: 7.47×10^24 formula units of potassium nitrate, KNO3. Express your answer with the appropriate units.
1 mole of KNO3 ------------> 6.023 * 10^23 formula units of KNO3
6.023 * 10^23 formula units of KNO3 ---------> 1 mole of KNO3
7.47 * 10^24 formula units of KNO3 ---------> (7.47 * 10 ^ 24) / (6.023 * 10^23) mole of KNO3
= 12.4025 moles of KNO3
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