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Chemistry I

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25.0 mL of ethanol (density = 0.789 g/mL) initially at 4.2°C is mixed with 35.7 mL of water (density = 1.0 g/mL) initially at 25.3°C in an insulated beaker. Assuming that no heat is lost, what is the final temperature of the mixture?

  • Chemistry I - ,

    [(mass EtOH x specific heat EtOH x (Tfinal-Tinitial)] + [(mass water x specific heat water x (Tfinal-Tinitial)] = 0

    Find mass EtOH and mass water from the density.
    mass = volume x density. Tf is the only unknown.

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