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Q: 25- 275=
A: 25- 275= -250.
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Asked 5/6/2009 10:31:04 PM
Updated 3/24/2014 8:50:20 AM
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25- 275= -250.
Added 3/24/2014 8:50:20 AM
This answer has been confirmed as correct and helpful.
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What is a pure substance? User: What does heterogeneous mean?
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Updated 186 days ago|12/19/2017 12:34:16 AM
2 Answers/Comments

A pure substance is a sample of matter with both definite and constant composition with distinct chemical properties.

Added 186 days ago|12/19/2017 12:33:04 AM
This answer has been confirmed as correct and helpful.

Heterogeneous means: consisting of elements that are not of the same kind or nature.


Added 186 days ago|12/19/2017 12:34:16 AM
This answer has been confirmed as correct and helpful.
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