Physcial Science
posted by Anonymous .
Hey There, I have 4 questions that I am totally stumped on... Can anyone help?
A 200gram chunk of stuff rises in temperature by 3oC when you input 1200 calories of heat. What is its specific heat capacity?
Answers
A)50 cal/goC.
B) 2 cal/goC.
C) 5 cal/goC.
D) 0.02 cal/goC.
You have two cups, one containing 100 g of ice at 0oC, the other containing 100 g of water at 80oC. You pour the hot water into the cup containing the ice. What do you wind up with?
Answers
A)100 g of 0oC water and 100 g of 80oC water.
B)50 g of 0oC ice and 50g of 0oC water.
C)200 g of 0oC water.
D)100 g of 0oC water.
A 20g piece of iron is heated to 100oC. It is then dropped on a very large chunk of ice. How much ice melts? The specific heat capacity of iron is 0.108 cal/goC.
Answers
A) 1.35 g
B) 2.7 g
C) 5.4 g
D) 20 g
A 50 gram ice cube is cooled to 10oC in the freezer. How many calories of heat are required to heat it until it becomes liquid water at 20oC? (The specific heat of ice is 0.5 cal/goC.)
Answers:
A)1250 cal.
B) 4000 cal.
C) 5000 cal.
D) 5250 cal.
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