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Katarina [22]
3 years ago
14

How many moles are in 8.0 x 10^13 atoms of Ag?explain please ​

Chemistry
1 answer:
zubka84 [21]3 years ago
8 0

1.328 × 10⁻¹⁰ Ag atoms

Explanation:

To find the number of moles we use the Avogadro's number to formulate the following reasoning:

if in          1 mole of Ag there are 6.022 × 10²³ Ag atoms

then in    X moles of Ag there are 8 × 10¹³ Ag atoms

X = (1 × 8 × 10¹³) / ( 6.022 × 10²³) = 1.328 × 10⁻¹⁰ Ag atoms

Learn more about:

Avogadro's number

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D. Same energy level but different sublevel.

<h3>Explanation</h3>

There are four quantum numbers [1]:

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  • <em>m_l</em>, the magnetic quantum number, and
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As their names might suggest:

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  • Each sublevel might contain more than one orbital. <em>m_l</em> gives the orbital of an electron.
  • Each orbital contains up to two electrons. <em>m_s</em> tells two electrons in the same orbital apart.<em> </em>

The two electrons in question come from the same atom. The question suggests that they have the same <em>n</em>, <em>m_l</em>, and <em>m_s</em>. As a result, both electrons are in main energy level <em>n</em> = 3. They share the same spin.

However, the two electrons differ in their value of <em>l</em>.

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<h3>Reference</h3>

[1] Kamenko, Anastasiya, et. al, "Quantum Numbers", Physical & Theoretical Chemistry, Chemistry Libretexts, 24 Mar 2017.

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