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2.) What is the formula weight of chalcone? Express your answer to 2 decimal places. g/mol mg/mmol 3.) Calculate the mass of chalcone that is equivalent to the following molar quantities. Show your work. 0.90 mmol mg 8 1.10 mmol = mg = 8 4.) What is the formula weight of dibromine? Express your answer to 2 decimal places. g/mol mg/mmol