An air conditioner uses 850 watts of electricity, and local emissions from electricity produce 1.37 pounds of CO\(_2\) per kWh. If you open a window instead of using the AC for 8 hours, how many pounds of CO\(_2\) would you keep from entering the atmosphere? Round your answer to the nearest hundredth of a pound. Do not include units with your answer.

Question

17-02-2025
Physics

High School

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An air conditioner uses 850 watts of electricity, and local emissions from electricity produce 1.37 pounds of CO\(_2\) per kWh. If you open a window instead of using the AC for 8 hours, how many pounds of CO\(_2\) would you keep from entering the atmosphere? Round your answer to the nearest hundredth of a pound. Do not include units with your answer.

Answer :

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DavidWilson78 DavidWilson78 · Answer 1 · 2023-07-21T18:57:22-04:00

Final answer:

Using the air conditioner for 8 hours would result in approximately 9.31 lbs of CO2 emissions. Therefore, by opening a window instead, you would keep this amount of CO2 from entering the atmosphere.

Explanation:

To calculate the amount of CO2 that would have been produced by using the air conditioner, we first need to convert the power rating of the AC unit from watts to kilowatt-hours (kWh), which is the unit given in the problem statement for CO2 emitted. One kilowatt is 1000 watts, so an 850 watt AC unit uses 0.85 kWh. Therefore, if the AC is used for 8 hours, it uses 0.85 kWh * 8 = 6.8 kWh of electricity.

Since each kWh of electricity produced leads to the emission of 1.37 pounds of CO2, using the AC for 8 hours would result in 6.8 kWh * 1.37 lbs/kWh = 9.31 lbs of CO2. Therefore, by opening a window instead of using the AC for this time, you prevent approximately 9.31 lbs of CO2 from being emitted into the atmosphere.

Learn more about CO2 Emissions here:

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