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olga nikolaevna [1]
2 years ago
12

Distinguish between an absorption spectrum and an emission spectrum. With which did Bohr work?

Chemistry
1 answer:
Marianna [84]2 years ago
4 0

Answer:

Bohr used emission spectrum for its mono atomic model....

Explanation:

Emission Spectrum is produced when atoms are excited by energy. After excitation, they emit this energy in the form of different wavelengths according to the type of atom and produce a unique fingerprint of themselves called as it's emission spectrum.

Absorption Spectrum is a type of spectrum that is produces when photons of light are absorbed by electrons at one state. they jump to another state and may cause scattering. This produces a specific absorption spectrum for that specific atom.

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In the nucleus of an Adam there are 18 protons and 20 neutrons what are the atomic number and mass number of this isotope
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Atomic number = 18 (Number of protons) 
Mass number = 18 + 20 (Number of protons + neutrons)
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3 years ago
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Given the balanced equation representing a reaction:
julia-pushkina [17]
2 and 3 are not possible because energy cannot be created nor destroyed. In order to break bonds, energy must be absorbed, so 1 is your answer!
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Someone plz help me :(
Nitella [24]

Answer:B

Explanation:

3 0
2 years ago
A mixture of gaseous CO and H2, called synthesis gas, is used commercially to prepare methanol (CH3OH), a compound considered an
Anit [1.1K]

<u>Answer:</u> The value of K_c for the reaction at 550.3 K is 247.83

<u>Explanation:</u>

Equilibrium constant in terms of concentration is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as K_{c}

For a general chemical reaction:

aA+bB\rightarrow cC+dD

The expression for K_{c} is written as:

K_{c}=\frac{[C]^c[D]^d}{[A]^a[B]^b}

The chemical equation for the production of methanol follows:

CO+2H_2\rightleftharpoons CH_3OH

The expression of K_c for above equation follows:

K_c=\frac{[CH_3OH]}{[CO][H_2]^2}

We are given:

[CH_3OH]=0.0401mol/L

[CO]=0.02722mol/L

[H_2]=0.07710mol/L

Putting values in above equation, we get:

K_c=\frac{0.0401}{0.02722\times (0.07710)^2}\\\\K_c=247.83

Hence, the value of K_c for the reaction at 550.3 K is 247.83

3 0
3 years ago
The study of quantitative relationships that can be derived from chemical formulas and equations is known as ________________
Korvikt [17]

Answer:

The answer to your question is Stoichiometry

Explanation:

Stoichiometry is a very important branch of inorganic chemistry that is used to calculate the amount of reactants or products necessary in a chemical reaction so we can get the highest yield.

In stoichiometry, we must know the balanced chemical reaction and we can work with the mass in grams or moles.

4 0
3 years ago
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