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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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MannyD MannyD
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7 years ago
Approximately how many elements occur naturally on Earth?
A) 20
B) 50
C) 90
D) 115
Textbook 
Chemistry for Changing Times

Chemistry for Changing Times


Edition: 13th
Authors:
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Chemistry for Changing Times, 13th Edition
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tropicauxtropicaux
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7 years ago
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MannyD Author
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7 years ago
This calls for a celebration Person Raising Both Hands in Celebration
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lolaww
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this is exactly what I needed
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