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7 September, 15:40

Calculate freeze 62.9 g of iron at 1535oC

Hf (J/g) = 257

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Answers (1)
  1. 7 September, 16:30
    0
    -16200J

    Explanation:

    (257J/g) (62.9g)

    eliminate the variables

    u get 16165.3

    go to 3 significant digits

    u get 16200

    and since it is freezing we are taking out energy so it would be

    -16200J
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