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15 September, 10:57

A piece of silver releases 202.8 J of heat while cooling 65.0 °C. What is the mass of the sample? Silver has a specific heat of 0.240 J/g °C.

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  1. 15 September, 11:20
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    Answer: 13 grams

    Explanation:

    The quantity of heat energy (Q) released from a heated substance depends on its Mass (M), specific heat capacity (C) and change in temperature (Φ)

    Thus, Q = MCΦ

    Since,

    Q = 202.8 Joules

    Mass of silver = ?

    C = 0.240 J/g °C.

    Φ = 65°C

    Then, Q = MCΦ

    202.8J = M x 0.240 J/g °C x 65°C

    202.8J = M x 15.6 J/g

    M = (202.8J / 15.6 J/g)

    M = 13 g

    Thus, the mass of silver is 13 grams
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