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Author Question: A 648-g empty iron kettle is put on a stove. How much heat. in joules. must it absorb to raise its ... (Read 300 times)

ss2343

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on: Jul 29, 2018
A 648-g empty iron kettle is put on a stove. How much heat. in joules. must it absorb to raise its temperature from to (The specific heat for iron is 113 cal/kg  C, 1 cal = 4.190 J)
 
  A) 6740 J
  B) 11,300 J
  C) 1610 J
  D) 16,100 J

Question 2

If we use 67 W of power to heat 148 g of water, how long will it take to raise the temperature of the water from 15C to 25C? The specific heat of water is 4190 J/kg  K.
 
  A) 93 s
  B) 5.3 s
  C) 22 s
  D) 114 h


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Alyson.hiatt@yahoo.com

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: A


ss2343

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


Alyson.hiatt@yahoo.com

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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