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A solution is prepared by dissolving 15.0 g of NH3 in 250 g of water. The density of the resulting solution is
0.974 g/mL. The mole fraction of NH3 in the solution is __________.
A) 16.8 B) 0.940 C) 0.0597 D) 0.922 E) 0.0640


    Mole fraction=molesNH3/total moles

    where total moles=moleNH3 + moleswater
    I will be happy to critque your work, if you need it.

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