# Best answer: What is the energy of one mole?

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## What is the energy of 1 mol?

It is also a SI derived unit of molar thermodynamic energy defined as the energy equal to one joule in one mole of substance. Since 1 mole = 6.02214076×1023 particles (atoms, molecules, ions etc.), 1 joule per mole is equal to 1 joule divided by 6.02214076×1023 particles, 1.66054×1024 joule per particle.

## How do you find the energy of a mole?

Multiply the photon energy value by Avogadro’s number to find the energy of one mole of photons. Avogadro’s number is the quantity of the number of molecules or particles in one mole of a particular substance and is equal to 6.02 x 1023.

## What is the energy of one mole of electron?

so, 182 kJ of energy is released when one mole of electrons “falls” from n = 3 to n = 2.

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n Energy (kJ/mol)
2 -328.00
3 -145.78
4 -82.00
5 -52.48

## What is the energy of 1 photon?

The energy of a single photon is: hν or = (h/2π)ω where h is Planck’s constant: 6.626 x 10-34 Joule-sec. One photon of visible light contains about 10-19 Joules (not much!) the number of photons per second in a beam.

## What is the energy of 1 mole of UV light at 253.7 nm?

An important reference wavelength is 253.7 nm, which corresponds to the main emission line in a low-pressure mercury lamp (used very often for the study of polymer photodegradation). The equivalent energy at this wavelength is 112.7 kcal mol-I.

## What is the energy of 1 mol of these photons in kJ mol )?

After finding the energy of one photon of each wavelength, express the energy of a mole of these photons in kJ/mol. Thus the energy carried by a single photon of 535 nm light is 3.71 × 1019 J.

## What is the energy of one mole of photons with?

The energy of photon is the energy carried by 1 mole of photon. It is directly proportional to the frequency of the electromagnetic radiation where the proportionality constant is the Planck’s constant (h). The value of Planck’s constant is 6.626×10−34 Js 6.626 × 10 − 34 J s .

## What is the energy of 1 mole of photons of red light with a wavelength of 700 nm?

Visible red light with a wavelength of 700 nm, for example, has a frequency of 4.29 x 1014 Hz, and an energy of 2.84 x 1019 J per photon or 171 kJ per mole of photons (remember Avogadro’s number = 6.02 × 1023 mol1).

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## What is the energy in one mole of photons of yellow light?

Planck’s constant is approximately 6.626 x 10^-34 m^2 kilograms per second. In the example, (6.626 x 10^-34) x (5.24 x 10^14) = 3.47 x 10^-19. The energy of this yellow light is 3.47 x 10^-19 Joules.

## What is the energy of one mole of photons with 540 nm?

The energy of 1 mole of the photon is 3.68 × 1019 J.

## What is the energy of one mole of UV photons of the same wavelength?

E = 4.79 × 106 J/UV mol

Thus, the energy of a single UV photon and 1 mole of UV photons having a wavelength of 25 nm is 4.79 × 106 J/UV mol.

## How much energy is 3 moles photons?

Each photon has an energy of 2.9450×1019 J. 1 mol of a photon has 6.022×1023 photons. The answer is option A), In 3.00 moles of photons with a wavelength of 675 nm, the energy is 532 kJ.