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What is the frequency (in reciprocal seconds) of electromagnetic radiation with a wavelength of 1.45 cm? Enter in scientific notation? A 15m solution of ab acid base has a Ka of 7.5 x 10 ^-3.Explain how you would classify this solution in terms of concentration and strength.? (10-18),(-8-1)? What is the molality of a solution contains 15 grams of solute is 500 grams of solvent? Instagram mi ha disattivato lâ€™account per limite di etÃ . Sono maggiorenne ma non capisco cosa sia successo. Cosa devo fare?