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The half-life of a radioisotope is the amount of time it takes for A. half the sample to decay. B. all the sample to decay. C. the age of an artifact to be calculated. D. detectable radiation to be absorbed by a sample
The half-life of a radioisotope is the amount of time it takes for half the sample to decay.
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Asked 10/2/2012 10:39:21 AM
Updated 2/5/2017 2:00:34 PM
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Edited by Jay901 [2/5/2017 2:00:34 PM]
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The half-life of a radioisotope is the amount of time it takes for half the sample to decay.
Added 2/5/2017 1:54:02 PM
This answer has been confirmed as correct and helpful.
Confirmed by Jay901 [2/5/2017 2:00:37 PM]
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Which of the following is NOT always true about a synthesis reaction? A. One product is formed. B. There is only one reactant. C. The general formula is C - > A + B. D. A product might be a compound, or it might be an element.
Question
Updated 3/1/2018 6:11:06 AM
1 Answer/Comment
The following is NOT always true about a synthesis reaction : There is only one reactant.
Added 2/28/2018 10:36:34 PM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [3/1/2018 6:11:07 AM]
As you move from left to right across a period, the number of valence electrons A. increases. B. stays the same. C. increases and then decreases. D. decreases.
Weegy: As you move from left to right across a period, the number of valence electrons increases. (More)
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Updated 1/10/2016 12:20:57 PM
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