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22 September, 09:37

Gold has a latent heat fusion of 64.5 J/g. How much energy is required to melt 20.0 g of gold?

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Answers (2)
  1. 22 September, 11:13
    0
    The amount of heat require to melt the gold is 1290 J.

    Explanation:

    Formula:

    Q = m * Lf

    Q = heat required to melt the substance

    m = mass of given substance

    Lf = Latent heat of fusion

    Given dа ta:

    Lf = 64.5 j/g

    m = 20 g

    Q = ?

    Now we will put the values in formula.

    Q = m * Lf

    Q = 20 g * 64.5 j/g

    Q = 1290 J

    The amount of heat require to melt the gold is 1290 J.
  2. 22 September, 13:00
    0
    The amount of heat require to melt the gold is 1290 J.
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