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Mathematics 14 Online
OpenStudy (anonymous):

the minimum economic grade for cerium (used in catylitic converters) is on the order of 100 grams per metric ton (1000 kilograms) of rock. The average grade of cerium in igneous rocks in 0.1 grams per metric ton rock. What is the concentration factor for cerium?

OpenStudy (anonymous):

any ideas?

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