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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 = 6.02214076×10^{23} particles (atoms, molecules, ions etc.), 1 joule per mole is equal to 1 joule divided by 6.02214076×10^{23} particles, 1.66054×10^{−}^{24} joule per particle.

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

**Multiply by Avogadro’s Number**

**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 10^{23}.

## 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.

…

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 × 10 ^{−}^{19} 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 10^{14} Hz, and an energy of **2.84 x 10 ^{–}^{19} J per photon** or 171 kJ per mole of photons (remember Avogadro’s number = 6.02 × 10

^{23}mol

^{−}

^{1}).

## 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 × 10 ^{–}^{19} J**.

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

**E = 4.79 × 10 ^{6} 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 × 10^{6} J/UV mol.

## How much energy is 3 moles photons?

Each photon has an energy of 2.9450×10^{–}^{19} J. 1 mol of a photon has 6.022×10^{23} photons. The answer is option A), In 3.00 moles of photons with a wavelength of 675 nm, the energy is **532 kJ**.