Question

The African Adventures exhibit water system holds approximately 850,000 gallons (3.2x109 g) of water. The temperature swing from sunrise to about an hour before sunset can be as high as 1.6 °C. How much heat in kilojoules must be absorbed to result in that temperature increase? Assume that the specific heat capacity of the exhibit is 4.184 J/gC. Canvas will not accept the answer in scientific notation. Count your zeros carefully.

Answer 1

Heat required to increase the temperature of the water system

= Mass of water × specific heat of water × temperature change

= 3.2×10⁹ (g) × 4.184 (J/g^o c) × 1.6 (^oc)

= 21422080000 J

= 21422080000 (J) ×

= 21422080 KJ.

[ Note : 1 KJ = 1000 J] .

Therefore, 21422080 Kilojoules of heat must be absorbed to result in that temperature increase.