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Final answer:To convert from micromolar to molar, multiply the micromolar value by 10^-6. For instance, 50.0 µM is equal to 5.00 × 10^-5 M.Explanation:To convert micromolar (µM) to molar (M), you need to recognize that "micromolar" denotes the concentration of a substance in micro moles per liter, which is a millionth of a mole per liter. Thus, 1 micromolar (µM) is equivalent to 1 × 10-6 moles per liter (M).For example, to convert 50.0 µM to molar, you would do the following calculation: 50.0 µM × 10-6 mol/µmol = 5.00 × 10-5 M. This is a simple direct multiplication where the µM unit converts to M using the conversion factor of 10-6....