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2 August, 09:49

If a sample is analyzed and the line intensity registers a relative color intensity of 15, what is the approximate molarity of morphine in the sample? (note: the molecular formula of morphine is c17h19no3)

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  1. 2 August, 10:11
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    The molarity of morphine is 2.45 * 10^-9 M

    Explanation:

    Step 1: Data given

    Molecular formula of morphine = C17H19NO3

    Atomic mass of C = 12.01 g/mol

    Atomic mass of H = 1.01 g/mol

    Atomic mass of O = 16.0 g/mol

    Atomic mass of N = 14.0 g/mol

    a relative color intensity of 15 corresponds to a morphine concentration of 0.7 ng/mL

    Step 2: Calculate molar mass of morphine

    Molar mass = 17 * 12.01 + 19*1.01 + 14.0 + 3*16.0

    Molar mass morphine = 285.36 g/mol

    Step 3: Calculate the molarity of morphine

    Molarity = 0.7 ng/mL * (1g / 10^9 ng) / (285.36 g/mol) * (1000 mL)

    Molarity = 2.45 * 10^-9 M

    The molarity of morphine is 2.45 * 10^-9 M
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