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irakobra [83]
4 years ago
14

Uranium is an element that is often used in nuclear power plants. Uranium atoms are very large, and the substance can be dangero

us if it is not carefully contained.What is true about all uranium atoms? A .They each have the same number of nuclear particles. B. They each have the same number of neutral particles. C. They each have the same number of neutrons. D. They each have the same number of protons.
Chemistry
1 answer:
Allushta [10]4 years ago
6 0

same number of protons and different number of neutrons are called isotopes

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4.00 dm of oxygen at a pressure of 2 atm and 1.00 dm3 nitrogen at a pressure of 1 atm are introduced into a 2.00 dm3 vessel.
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A

Explanation:

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The side chain of histidine has a pKa of about 6. What percent of histidine side chains would be deprotonated at pH 7.5
Setler [38]

The percent of histidine side chains would be deprotonated at pH 7.5  is 5.77 %.

<h3>What is pKa?</h3>

The term pKa refers to the negative logarithm of the acid dissociation constant (Ka). The pH is the negative logarithm of the hydrogen ion concentration.

Hence;

Ka = Antilog (-6) =1 * 10^-6

[H^+] = Antilog (-7.5) = 3 * 10^-8 M

We now have to use the formula;

α = \sqrt{} \frac{Ka}{[H^+] }

α = \sqrt{} \frac{ 1 *10^-6}{3 *10^-8  }

α = 5.77 %

Hence, the percent of histidine side chains would be deprotonated at pH 7.5  is 5.77 %.

Learn more about percent dissociation: brainly.com/question/12273293

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