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A solution of ethanol (C2H50H) in water is prepared by dissolving 76.9ml of ethanol (density0.79g/cm3) in enough water to make 0.25L of solution. What is the molarity of ethanol in this solution

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  • chemistry -

    Use density ethanol to calculate grams.
    Convert grams ethanol to mols. mols = grams/molar mass.
    Then M = mols/L soln.

  • chemistry -

    How much heat (in kilojoules) is evolved or absorbed in the reaction of 2.20g of Na with H2O?

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