Sarah was volunteering in a local shelter. Her job was to boil the water needed

Question

Sarah was volunteering in a local shelter. Her job was to boil the water needed to wash the dishes at a temperature that would kill most germs. The boiling point of water is 100 degree C. Sarah has a 30 quart pot that is nearly full of water. The mass of 30 quarts of water(28 L) would be approximately 2800 grams. If Sarah heats the water from 20 degree C to the boiling point of water, how much heat has sue added to the water? SMC of water = 1.00 cal/g-C degree. Q = mC Delta T. A. 224.000 calories B. 35 calories C. 0.029 calories D. 2880 calories

Explanation / Answer

heat required (q) = mcDT

m= mass of water = 2800 grams

c = specificheat of water = 1 cal/g.c

DT = 100-20 = 80 C

q = 2800*1*80

= 224,000 calories

answer: A

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