Recycling aluminum consumes 95% less energy than refining the ore. Consider a material that requires a total energy of 100 k Wh for refining. If recycling requires 95 % less energy compared to refining, the same mass of material can be recycled using 5 kWh of energy because 100 kWh – 95 kWh = 5 kWh. The 95 kWh is the energy saved. About 17 kWh of electricity is required to refine 1.0 kg of aluminum from its ore (17 kWh/kg). How many million kWh of energy is saved if a plant recycles 90 million kg of aluminum? Express your answer numerically to two significant figures in million kWh. Since the units are million kWh, you may skip multiplying by 10°.

Recycling aluminum consumes 95% less energy than refining the ore. Consider a material that requires a total energy of 100 k Wh for refining. If recycling requires 95 % less energy compared to refining, the same mass of material can be recycled using 5 kWh of energy because 100 kWh – 95 kWh = 5 kWh. The 95 kWh is the energy saved. About 17 kWh of electricity is required to refine 1.0 kg of aluminum from its ore (17 kWh/kg). How many million kWh of energy is saved if a plant recycles 90 million kg of aluminum? Express your answer numerically to two significant figures in million kWh. Since the units are million kWh, you may skip multiplying by 10°.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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