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shusha [124]
3 years ago
11

What is a coefficient that proceeds a substance in a chemical reaction?

Chemistry
1 answer:
Alla [95]3 years ago
7 0

Answer:

In Chemistry the coefficient is the number in front of the formula. The coefficient tells us how many molecules of a given formula are present.

Explanation:

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Which pair has identical electron configurations?
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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.  

Charging electrons in the sub-shell uses the following sequence:  

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

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S²⁻ : [Ne] 3s²3p⁶

Cl : [Ne] 3s²3p⁵

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Cl⁻ : 1s² 2s² 2p⁶ 3s²3p⁶

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Ar : [Ne] 3s²3p⁶

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Cl⁻ : 1s² 2s² 2p⁶ 3s²3p⁶

K : 1s² 2s² 2p⁶ 3s² 3p⁶4s¹

6 0
3 years ago
If 61.5 moles of an ideal gas occupies 97.5 liters at 473 K, what is the pressure of the gas, in mmHg?
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Explanation:

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Explanation:

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