Imagine that you have a cup of water containing 84.3 g. The specific heat of wat
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Question
Imagine that you have a cup of water containing 84.3 g. The specific heat of water is 4.19 J/g
Imagine that you have a cup of water containing 84.3 g. The specific heat of water is 4.19 J/g· degree C with negligible change to its value when one deals with the temperature range between 0 degree C and 100 degree C. Assume there is no energy loss to the environment during the heating process. You use an immersion heater rated at 100 W to heat the 84.3 g of water from 20 degree C to 52.8 degree C. How long does it take to do this? You now use the immersion heater to heat the 84.3 g of water to its boiling point of 100 degree C. Measuring from the time the water reaches 100 degree C, how much longer should you leave the heater in until only HALF of the mass of the water is left (the other half is converted into steam at 100 degree C)? The latent heat of vaporization of water is Lv = 2.26 times 103 J/g. Again, assume no energy loss to the environment.Explanation / Answer
Energy required to heat the 84.3 g of water from 20