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five hundred kcal of heat is added to 2-kg of water at 80 degree Celsius. how much steam is produced?

  • Physics - ,

    First, you need to transfer 2*1.0*20 = 40 kcal to heat the 2kg 20 degrees to the boiling point. That leaves 460 kcal for vaporization.

    Amount of steam produced = (460 cal)/(540 kcal/kg) = 0.852 kg

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