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pochemuha
3 years ago
9

What STARTING element undergoes alpha decay to yield uranium-234 (U) as a PRODUCT?

Chemistry
1 answer:
nadezda [96]3 years ago
3 0
Uranium-238 is the element that undergoes decay to yield uranium-234
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Calculate the percent activity of the radioactive isotope strontium-89 remaining after 5 half-lives.
maria [59]
The answer to this question would be: 3.125%

Half-life is the time needed for a radioactive molecule to decay half of its mass. In this case, the strontium-89 is already gone past 5 half lives. Then, the percentage of the mass left after 5 half-lives should be:
100%*(1/2^5)= 100%/32=3..125%
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3 years ago
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timama [110]

Answer:

pI = 6.16

Explanation:

The pI is given by the average of the pKas that are involved. In this case,

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erastovalidia [21]

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