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<h2>CARRYONLEARNING</h2><h2> </h2>
<span>The next to outermost electron shell begins to fill up.</span>
<span>If you overshoot the endpoint of the acetic acid/NaOH titration, the expected effect on the calculated concentration of acetic acid will be higher because the volume measured for the titrant NaOH which is assumed to react with the acetic acid is more than what is needed to completely react with the given solution.</span>
Answer:
The correct answer would be = 0.1593 mCi.
Explanation:
The initial 123I = 2.55 mCi (given)
We know that the half-life of radioactive I-123 = 12 hours approximately.
So, we can say that in 48 hours there will be four half-lives of 123I,
Hence after four half-life or 48 hours, the final 123I would be:
= 2.55 * (1/2⁴)
= 2.55 * (1/16)
= 0.1593 mCi
Thus, the correct answer would be = 0.1593 mCi.
i’m pretty sure 5 valence electrons