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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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bio_man bio_man
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9 years ago
A pure substance is matter that consists of matter with a composition that ________.
A) is fixed in a definite proportion at all times
B) varies according to the amount of water present
C) depends on the temperature
D) always contains oxygen
E) always contains two or more substances
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f_zah1f_zah1
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9 years ago
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bio_man Author
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9 years ago
Thank you, thank you, thank you!
MLynneMcMillan
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Yesterday
Thanks
shimyshiguy
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2 hours ago
Good timing, thanks!
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