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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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Whelan Whelan
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9 years ago
Radium occurs only in uranium ores, typically with an observed Ra/U ratio of 1mg/3kg. Uranium ores normally contain only about 200 ppm of U. How many kilograms of uranium ore must be processed to obtain 1 mg of radium?
A) 1700 kg ore
B) 15,000 kg ore
C) 6.0 × 108 kg ore
D) None of these
Textbook 
Introductory Chemistry Essentials

Introductory Chemistry Essentials


Edition: 5th
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hbutler2hbutler2
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9 years ago
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Whelan Author
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9 years ago
Correct Slight Smile TY
gma_of_7
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Yesterday
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hmonier
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2 hours ago
Helped a lot
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