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Nadya [2.5K]
3 years ago
14

A.Characterize each of the following as

Chemistry
1 answer:
kondor19780726 [428]3 years ago
8 0

According to the Bohr model, an absorption occurs when an electron moves from a lower to a higher energy level and emission occurs when an electron moves from a higher to a lower energy level.

Following the Bohr model, electrons are found in certain specific energy levels. When an electron moves from one energy level to another, energy may be absorbed or emitted.

Movement from a higher to a lower energy level means that energy is emitted while movement from a lower to a higher energy level means that energy is absorbed.

Based on this, we can now sort the transitions as follows;

E2 to E1 -----  emission

E1 to E3 ------- absorption

E6 to E3 ------- emission

Learn more: brainly.com/question/3964366

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Answer:

The number of formula units in 3.81 g of potassium chloride (KCl) is approximately 3.08 × 10²²

Explanation:

The given parameters is as follows;

The mass of potassium chloride produced in the chemical reaction (KCl) = 3.81 g

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The Molar Mass of KCl = 74.5513 g/mol

The \ number \ of \ moles \ of \ a \ substance, n = \dfrac{The  \  mass  \  of  \  the substance}{The   \  Molar  \   Mass   \  of  \   the   \  substance}

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The \ number \ of \ moles \ of \ KCl= \dfrac{3.81 \ g}{74.5513 \ g/mol} \approx 0.051106 \ moles

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0.051106 moles of KCl contains 0.051106 × 6.022 × 10²³  ≈ 3.077588 × 10²² formula units

From which we have, the number of formula units in 3.81 g of potassium chloride (KCl) ≈ 3.08 × 10²² formula units.

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