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Chemistry

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One mole of carbon (12.0 g) in the form of
crystalline graphite is burned at 25

C and
1.000 atm pressure to form CO2(g). All of the
heat produced is used to heat a 4560 g bath
of liquid water, originally at 25

C. What is
the final temperature of the water bath? The
heat of formation of CO2(g) is −393.5 kJ/mol
and the specific heat of water is 4.18 J/g/

C.

  • Chemistry -

    One mole C burned produces 393.5 kJ.
    q = mass H2O x specific heat H2O x (Tfinal-Tinitial)
    393.5 = 4560g x 418 x (Tf-25).

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