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If 1500 kg of water at 22 °C is cooled to 4.0 °C, how much

Chapter 18, Problem 98PP

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QUESTION:

Problem 98PP

If 1500 kg of water at 22 °C is cooled to 4.0 °C, how much energy is released? (For comparison, the energy released in burning a gallon of gasoline is 1.3 × 108 J.)

A. 2.5 × 107 J

B. 1.1 x 108 J

C. 1.4 × 108 J

D. 1.6 × 108 J

Questions & Answers

QUESTION:

Problem 98PP

If 1500 kg of water at 22 °C is cooled to 4.0 °C, how much energy is released? (For comparison, the energy released in burning a gallon of gasoline is 1.3 × 108 J.)

A. 2.5 × 107 J

B. 1.1 x 108 J

C. 1.4 × 108 J

D. 1.6 × 108 J

ANSWER:

Solution 98PP

Step 1 of 2

To calculate the released energy if water is cooled.

The equation to calculate the heat energy is,

 

Where, - Mass of the substance

               - Specific heat capacity of the substance

   And - Change in temperature

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