Question
Please help me out with part c only. Part a and b are alreadyanswered. a. caculate the amount of heat (kcal) release when 50.0 g ofwater at 100oC hits the skin and cool to a bodytemperture of 370C. b. caluclate the amount of heat (kcal) releasedwhen 50.0 g ofsteam at 1000C hits the skin, condenses, and cools to abody temperture of 370C. a. heat released =mass*Specific Heat*Temp difference = 50.0 g * 1.00 cal/g * (100-37) = 3150 Calories = 3.150 kcal b. First the steam cools to water at 100C Heat released = heat of vaporization x mass = 540 cal/g x 50.0g = 27,000 cal = 27 kcal Then it cools to 37C releasing the same heat at calculateabove. Heat released 27Kcal + 3.150= 30.15 Kcal C. Use your answers in questions a and b to explain why steamburns are so severe. Please help me out with part c only. Part a and b are alreadyanswered. a. caculate the amount of heat (kcal) release when 50.0 g ofwater at 100oC hits the skin and cool to a bodytemperture of 370C. b. caluclate the amount of heat (kcal) releasedwhen 50.0 g ofsteam at 1000C hits the skin, condenses, and cools to abody temperture of 370C. a. heat released =mass*Specific Heat*Temp difference = 50.0 g * 1.00 cal/g * (100-37) = 3150 Calories = 3.150 kcal b. First the steam cools to water at 100C Heat released = heat of vaporization x mass = 540 cal/g x 50.0g = 27,000 cal = 27 kcal Then it cools to 37C releasing the same heat at calculateabove. Heat released 27Kcal + 3.150= 30.15 Kcal C. Use your answers in questions a and b to explain why steamburns are so severe.
Explanation / Answer
Even though both steam and water are at 100 oC,steam has more energy than water at the same temperature. This isknown as heat of vaporization. So when steam cools, much moreenergy is given out than when water cools from the sametemperature. So we can see the big difference in the answers for parta and b. This is the reason why steam burns are so severe.