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Rare earth metals are widely used in a variety of important products (Core Case Study). According to the U.S. Geological Survey, China has about 50% of the world’s reserves of rare earth metals. Use this information to answer the following questions. In 2010, the global demand for rare earth metals was about 133,600 metric tons. At this annual rate of use, if China were to produce all of the world’s rare earth metals, how long would their reserves last?

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Environmental Science (MindTap Cou...

15th Edition
G. Tyler Miller + 1 other
Publisher: Cengage Learning
ISBN: 9781305090446

Solutions

Chapter
Section
BuyFindarrow_forward

Environmental Science (MindTap Cou...

15th Edition
G. Tyler Miller + 1 other
Publisher: Cengage Learning
ISBN: 9781305090446
Chapter 12, Problem 2DA
Textbook Problem
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Rare earth metals are widely used in a variety of important products (Core Case Study). According to the U.S. Geological Survey, China has about 50% of the world’s reserves of rare earth metals. Use this information to answer the following questions.

In 2010, the global demand for rare earth metals was about 133,600 metric tons. At this annual rate of use, if China were to produce all of the world’s rare earth metals, how long would their reserves last?

To determine

The time required by China to exhaust its rare earth metals reserve if it produces all of World’s rare earth metals.

Explanation of Solution

China had 55 million metric tons (50,000,000 metric tons) of rare earth metals in its reserve in 2010. In the same year, the global demand for rare earth metals was 133,600. If China produced all of World’s rare earth metals, it would exhaust its rare earth reserve in the following time:

time=Total amount of rare earth metals in reserve

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