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2 years ago

A.Characterize each of the following as

1 answer:

kondor19780726 [428]2 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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The energy of the universe is constant. That what mentioned by the first law of thermodynamics,

Goryan [66]

Answer:

No, ΔE does not always equal zero because it refers to the systems internal energy, which is affected by heat and work

Explanation:

According to the first law of thermodynamics, energy is neither created nor destroyed. This implies that the total energy of a system is always a constant.

So, according to the first law of thermodynamics we have that ΔE = q + w. This means that the value of ΔE depends on q (heat) and w(work). Hence ΔE is not always zero since it depends on the respective values of q and w.

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2 years ago

A 0.100 M solution of bromoacetic acid (BrCH2COOH) is 13.2% ionized. Calculate [H+]? Calculate BrCH2COO^ - ? Calculate BrCH2COOH

Natali [406]

Answer: The concentration of hydrogen ion and bromoacetate ion is 0.0132 M and 0.0132 M resepectively and that of bromoacetic acid is 0.0868 M

Explanation:

We are given:

Molarity of bromoacetic acid = 0.100 M

Percent of ionization = 13.2 %

The chemical equation for the ionization of bromoacetic acid follows:

$BrCH_2COOH\rightarrow BrCH_2COO^-+H^+$

1 mole of bromoacetic acid produces 1 mole of bromoacetate ion and 1 mole of hydrogen ion

Molarity of hydrogen ion = 13.2 % of 0.100 = $\frac{13.2}{100}\times 0.100=0.0132M$

Molarity of bromoacetate ion = molarity of hydrogen ion = 0.0132 M

Molarity of bromoacetic acid = Molarity of solution - Molarity of ionized substance

Molarity of bromoacetic acid = 0.100 - 0.0132 = 0.0868 M

Hence, the concentration of hydrogen ion and bromoacetate ion is 0.0132 M and 0.0132 M resepectively and that of bromoacetic acid is 0.0868 M

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3 years ago

How Earth and the sun move in space relative to each other

liberstina [14]

The two theories were:

1.Geocentric theory stating that earth is the centre of the universe and sun revolves around it.

2.Heliocentric theory stating that the earth revolves around the sun.

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2 years ago

What is the substance that is formed when the acid react with bases in a neutralization reaction?

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Answer:

Water and Salt

Explanation:

A neutralization reaction occurs when an acid and a base react to produce water and a salt, and it entails the formation of water from the mixture of H+ and OH- ions.

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