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13 December, 16:12

Water is to be boiled at sea level (1 atm pressure) in a 30-cm-diameter stainless steel pan placed on top of a 18-kW electric burner. If 60 percent of the heat generated by the burner is transferred to the water during boiling, determine the rate of evaporation of water. (Round the final answer to three decimal places.)

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  1. 13 December, 16:36
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    18 kW = 18000 J / s

    60% of 18kW = 10800 J/s

    Latent heat of evaporation of water

    = 2260 x 10³ J / kg

    kg of water being evaporated per second

    = 10800 / 2260 x 10³ kg / s

    = 4.7787 x 10⁻³ kg / s

    = 4.78 gm / s.
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