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How many grams of iron3 nitrate nonahydrate are required to prepare 157 mL of a 0.48 M solution? Use the Cantor-Schröder-Bernstein Theorem to prove that [-1,1]~(-1,1)∪(1,2)? Last derivative problem please help? Ase answer this question....I don't know how to do it......please help its from polygon chapter.....? If 75.0 g of potassium alum is obtained from 5.00 g of aluminum, what is the percent yield?