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S_A_V [24]
2 years ago
13

I really need to know the answer it will help

Chemistry
2 answers:
iogann1982 [59]2 years ago
3 0

Answer:

Answer: 5.199 moles

Explanation: Please can I have brainliest

Paladinen [302]2 years ago
3 0

Answer:

so the answer is A 5.199mol please. rate. me brainliest. if its. correct

Explanation:

N=nL

3.131 \times  {10}^{24} = n \times 6.022 \times  {10}^{23}  \\n =   \frac{3.131 \times  {10}^{24} }{6.022 \times  {10}^{23} }  \\ n = 5.199mol

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Answer:

The wavelength of the emitted photon will be approximately 655 nm, which corresponds to the visible spectrum.

Explanation:

In order to answer this question, we need to recall Bohr's formula for the energy of each of the orbitals in the hydrogen atom:

E_{n} = -\frac{m_{e}e^{4}}{2(4\pi\epsilon_{0})^2\hbar^{2}}\frac{1}{n^2} = E_{1}\frac{1}{n^{2}}, where:

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e = electron charge

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Therefore, the energy of the emitted photon is given by the difference of the energy in the 3d orbital minus the energy in the 2nd orbital:

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Now, knowing the energy of the photon, we can calculate its wavelength using the equation:

[tex]E = \frac{hc}{\lambda}[tex], where:

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h = Planck's constant

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Solving for [tex]\lambda[tex] and substituting the required values:

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<h2>0.06 % </h2>

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