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Dafna11 [192]
3 years ago
6

Iodine-131 is used to

Chemistry
1 answer:
Yakvenalex [24]3 years ago
7 0

Iodine 131 is a radioisotope with a very short half-life of 8.02 days, making it highly radioactive. Frequently used in small doses in thyroid cancers therapies, it is also one of the most feared fission products when accidentally released into the environment. Radiotoxicity of iodine 131.

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What is the concentration of OH − and pOH in a 0.00066 M solution of Ba ( OH ) 2 at 25 ∘ C? Assume complete dissociation.
Allushta [10]

<u>Answer:</u> The hydroxide ion concentration and pOH of the solution is 1.32\times 10^{-3}M  and 2.88 respectively

<u>Explanation:</u>

We are given:

Concentration of barium hydroxide = 0.00066 M

The chemical equation for the dissociation of barium hydroxide follows:

Ba(OH)_2\rightarrow Ba^{2+}+2OH^-

1 mole of barium hydroxide produces 1 mole of barium ions and 2 moles of hydroxide ions

pOH is defined as the negative logarithm of hydroxide ion concentration present in the solution

To calculate pOH of the solution, we use the equation:

pOH=-\log[OH^-]

We are given:

[OH^-]=(2\times 0.00066)=1.32\times 10^{-3}M

Putting values in above equation, we get:

pOH=-\log(1.32\times 10^{-3})\\\\pOH=2.88

Hence, the hydroxide ion concentration and pOH of the solution is 1.32\times 10^{-3}M  and 2.88 respectively

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Explain why lithium is a strong reducing agent, whereas fluorine is a strong oxidizing agent.
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Why the recombinant DNA is reintroduced into the bacterium?
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Soil that is damaged and loses its nutrients is quick to regain nutrients.
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false,soil damage and nutrient loss can be a major problem so it can not gain nutrients quickly

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Org. chem. How is this "1-aminopropan-2-ol" and not "3-aminopropan-2-ol"
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You want to achieve the lowest number possible
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