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zimovet [89]
2 years ago
5

Select all that are true

Chemistry
1 answer:
kipiarov [429]2 years ago
8 0
I think it’s B not quite sure ! Sorry
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The Doppler effect related change in wave frequency to what?
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Relative motion of source and observer.

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Which pair has identical electron configurations?
Thepotemich [5.8K]

Identical electron configurations : K⁺ and Cl⁻

<h3>Further explanation  </h3>

In an atom, there are levels of energy in the shell and sub-shell  

This energy level is expressed in the form of electron configurations.  

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<em>1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d¹⁰, 4p⁶, 5s², 4d¹⁰, 5p⁶, 6s², etc.  </em>

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Ar : [Ne] 3s²3p⁶

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K : 1s² 2s² 2p⁶ 3s² 3p⁶4s¹

6 0
3 years ago
If you have 85.0 grams of CO₂, calculate how many moles of CO₂ would you have?
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k0ka [10]

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Explanation:

<h2>I hope it's helpful for you</h2>
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