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Name Exam 2 Chapters 4,5,6 Best 12 of 13 used. 1. The phase change from ice to l

ID: 1295992 • Letter: N

Question

Name Exam 2 Chapters 4,5,6 Best 12 of 13 used. 1. The phase change from ice to liquid water takes place at a) Constant pressure b) constant temperature b) c) constant volume d) all of the above 2. The temperature is 95 degrees Fahrenheit, what is this in Kelvin? 3. If you add 5880 cal of heat to 40 grams of ice originally at -30 degrees C you will produce water. What will be the temperature of the water? (coe 0.5 cal/gC. CH20 1 cal/gC. Lloe 80 calg) 4. A 300 watt immersion heater is used to heat 280 g of water from 20 degrees C to 80 degrees C. How long does this take in seconds? 5. How many joules of work do you have to do to burn off 300 food calories? (1 food Calorie 1000 cal, 1 cal 4.18 J) b) 1.39x10 c) 4180 d) 12.5x105 a) 7.2x10

Explanation / Answer

9.1.2m

5.d(12.54*105)