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1. The average American household consumes 11,000 kWh per year. a. If there are 3.6 x 10° J in a kWh, how many J is this? 11,000 3.6 × 10 b. How many calories is this? 396000 4.184 = 3.96x10³J 946-10.27 cal c. If the heat of vaporization for water is 540 cal /g. How many grams of water would be needed to generate this many calories? 94,646.27-5410cal ÷510cal 175.27g 175.279 d. If the heat generated by combustion of fossil fuels is 45,000,000 J/kg, how many g of fossil fuel would be needed to heat this water?

1. The average American household consumes 11,000 kWh per year. a. If there are 3.6 x 10° J in a kWh, how many J is this? 11,000 3.6 × 10 b. How many calories is this? 396000 4.184 = 3.96x10³J 946-10.27 cal c. If the heat of vaporization for water is 540 cal /g. How many grams of water would be needed to generate this many calories? 94,646.27-5410cal ÷510cal 175.27g 175.279 d. If the heat generated by combustion of fossil fuels is 45,000,000 J/kg, how many g of fossil fuel would be needed to heat this water?

Introductory Chemistry: A Foundation
Introductory Chemistry: A Foundation
8th Edition
ISBN:9781285199030
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Donald J. DeCoste
Chapter10: Energy
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1. The average American household consumes 11,000 kWh per year. a. If there are 3.6 x 10 J in a kWh, how many J is this? 3.6 × 10 11,000 b. How many calories is this? 396000 4.184 = cal 3.96x10³J 946-10-27 cal c. If the heat of vaporization for water is 540 cal/g. How many grams of water would be needed to generate this many calories? 94,646.27 ÷540cal = 175.27g 175.279 d. If the heat generated by combustion of fossil fuels is 45,000,000 J/kg, how many g of fossil fuel would be needed to heat this water?
Transcribed Image Text:1. The average American household consumes 11,000 kWh per year. a. If there are 3.6 x 10 J in a kWh, how many J is this? 3.6 × 10 11,000 b. How many calories is this? 396000 4.184 = cal 3.96x10³J 946-10-27 cal c. If the heat of vaporization for water is 540 cal/g. How many grams of water would be needed to generate this many calories? 94,646.27 ÷540cal = 175.27g 175.279 d. If the heat generated by combustion of fossil fuels is 45,000,000 J/kg, how many g of fossil fuel would be needed to heat this water?
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