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Chemistry

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A 40.0g sample of an unknow, yellowish-brown, pure metal was heated to 62degrees Celcius and put into a coffee cup calorimeter containing 85.0g of watera at 19.2 degrees Celcius. The water was heated by the hot metal to a temperature of 21.0 degrees Celcius. What is the specific heat of the metal? Is it possible that the metl is gold?

  • Chemistry - ,

    See above.

  • Chemistry - ,

    1st find the heat of water in Joules. Heat absorbed by water is heat lost by metal.

    Use this to find Specific heat of metal:
    SH = J/mass*Change in Temp of metal
    SH = 640.152J/40g*41C
    SH = 390.33658854 x 10^-3
    SH = .390 J/gC

    It's not gold whose SPHeat is .131...it is likely copper perhaps.

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