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9 October, 10:47

Consider two identical iron nails: one nail is heated to 95 °c, the other is cooled to 15 °c. the two nails are placed in a coffee cup calorimeter and the system is allowed to come to thermal equilibrium. what is the final temperature of the two nails

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  1. 9 October, 11:12
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    The heat released or absorbed by a substance is calculated through the equation,

    H = mcpdT

    where H is teh heat,

    m is the mass,

    Cp is the specific heat, and

    dT is the temperature difference

    In this item, since both nails are identical, m and cp for both nails are equal such that the equation can be expressed as,

    mcp (95 - x) = mcp (x - 15)

    where x is the final temperature. Solving for the value of x from the equation derived above will give us a final answer of 55 degrees C.

    Answer: 55°
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