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24 December, 11:16

How much heat is required to completely boil away 0.200 kg of water (ΔHv = 2.26 * 103 kJ/kg) ?

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Answers (2)
  1. 24 December, 12:39
    0
    We will use the formula:

    Q = ml

    where Q is the heat, m is the mass of substance, and l is the latent heat of vaporization of the substance.

    Q = 0.2 x 2.26 x 10³

    Q = 452 kJ
  2. 24 December, 12:53
    0
    The heat required to completely boil away 0.200 kg of water is 4.52 * 102 kJ.
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