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匿名 發問於 科學及數學化學 · 1 十年前

a question about science

A 10-g piece of copper heated to 50oC would feel hotter in your hand than a 10-g piece of silver also heated to 50oC when holding for same period of time. If the copper and silver can conduct heat equally well,

can anyone tell me why?

更新:

( any answer can be simplier and without any formular? )

1 個解答

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    Lv 6
    1 十年前
    最愛解答

    Specific heat capacity of Cu = 384.60 J Kg−1 K−1

    Specific heat capacity of Ag = 235.01 J mol−1 K−1

    (data from wikipedia)

    molar heat capacity/molar mass

    = specific heat capacity(per unit mass)

    by considering E= m c △T

    EAg= m △T (235.01 J mol−1 K−1)

    ECu = m △T (384.60 J Kg−1 K−1)

    = 1.64 EAg

    ∴ ECu > EAg

    i.e. Heat energy released by Cu > heat energy released by Ag

    2007-10-03 15:56:34 補充:

    specific heat capacity of Cu Agwith constant mass, temperature, rate of heat flow,more heat energy is given out by the Cu Hence you will feel "the Cu is hotter "

    2007-10-09 20:49:39 補充:

    you must learn the concept of HEAT CAPACITY first

    資料來源: me
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