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Helen [10]
3 years ago
15

The following atoms are all variations of the element carbon: 12C, 13C, and 14C due to differing

Chemistry
1 answer:
Katen [24]3 years ago
5 0
Isotopes. 
<span>Some isotopes of elements that are not usually radioactive are radioactive because they don't have a suitable number of neutrons. For example carbon-12 is stable but carbon-14 is radioactive. Carbon-12 is much more common.</span>
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Please help. 1.600x10^8 / 8.000x10^11
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Answer:

2x10^-4 = 2E-4

Explanation:

3 0
2 years ago
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3 years ago
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5 0
3 years ago
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ivann1987 [24]
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3 years ago
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Answer:

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Explanation:

Given              Isotopic             %Abundance     fractional          Wt Avg

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Cu-63              62.93                      69.09              0.6909            43.4783

Cu-65              64.9278                  20.0668        0.200668        20.0668

Wt Average of all isotopes = ∑Wt Avg Contributions

=  43.4783 amu + 20.0668 amu = 63.35457 amu

7 0
3 years ago
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