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tatyana61 [14]
4 years ago
13

Under equilibrium condition, what is the probability of an electron state being occupied if it is located at the Fermi level

Chemistry
1 answer:
Sav [38]4 years ago
8 0

Answer:

Hi

The Fermi Level is a term used to describe the set of electron energy levels at a temperature of absolute zero. Fermi's energy concept is important for the understanding of the electrical and thermal properties of solids. Both electrical and thermal processes involve energy values of a small fraction of an electron-volt. In thermal equilibrium, the net current of both electrons and holes is zero.

Explanation:

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<span>Japan began its invasion of China in 1931. The Japanese military had their way over the armed forces of China, and occupied parts of China important to their war aims.</span>
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3 years ago
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Which change is most likely to occur when a molecule of h2 and a molecule i2 collide with proper orientation and sufficient ener
Alekssandra [29.7K]

Answer: Formation of hydrogen iodide will occur.

Explanation:

When molecule of hydrogen gas (H_2) and molecule of iodine gas (I_2) collide with proper orientation and with sufficient amount of energy. This collision of the two different molecules of gases will result in the formation of hydrogen iodide.

The balanced chemical equation of the reaction will written as:

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4 years ago
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During a titration, the pH of an analyte solution containing HA(aq) is 3.92 and the ratio of [A–]/[HA] is 0.41. What is the Ka o
Solnce55 [7]

Answer:

Ka=4.71x10^{-4}

Explanation:

Hello there!

In this case, according to the Henderson-Hasselbach equation, it is possible to write:

pH=pKa+log(\frac{[A^-]}{[HA]} )

Next, since we are given the pH and the [A–]/[HA] ratio, we can solve for the pKa as shown below:

pKa=pH-log(\frac{[A^-]}{[HA]} )

Now, we plug in the values to obtain:

pKa=3.92-log(0.41 )\\\\pKa=3.33

Next, Ka is:

Ka=10^{-pKa}=10^{-3.33}\\\\Ka=4.71x10^{-4}

Best regards!

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3 years ago
A gold nugget has a density of 38.6g/cm3 and a mass of 270.2. what is its volume?​
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38.6=270.2/V

<em>*Multiply both sides by V*</em>

38.6V=270.2

<em>*Divide both sides by 38.6*</em>

V=7


The volume of the gold nugget is 7cm3.


Hope this helps!!

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Answer:

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b)5×10⁴

c)3.010×10⁻⁶

d)1.3240×10²

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