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? asked in Science & MathematicsPhysics · 2 months ago

physics problem?

The United States Bullion Depository at Fort Know, Kentucky, contains almost half 1, million standard mint gold bars, each with a massive 12.4414 kg. Assuming and initial bar temperature of 5 C, each bar will now if it absorbs 2.5 MJ I have energy transferred by heat. If the specific heat capacity of gold is 129 J/kg*C and the melting point of gold is 1063 C, calculate the latent heat Fusion of Gold. 

Lf(gold)=

Update:

The United States Bullion Depository at Fort Know, Kentucky, contains almost half a million standard mint gold bars, each with a mass of 12.4414 kg. Assuming an initial bar temperature of 5 C, each bar will now if it absorbs 2.5 MJ of energy transferred by heat. If the specific heat capacity of gold is 129 J/kg*C and the melting point of gold is 1063 C, calculate the latent heat Fusion of Gold. 

Lf(gold)=

2 Answers

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  • ?
    Lv 7
    2 months ago
    Favorite Answer

    2.5E6 J = 12.4414kg * (129J/kg·ºC*1058ºC + L)

    L = 64460 J/kg ≈ 64 kJ/kg

    assumes that it's heated to only 1063ºC

  • Lisa A
    Lv 7
    2 months ago

    Please restate the problem in English.

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