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## How much energy (in kJ) do 3.0 moles of photons, all with a wavelength of 655 nm, contain?

The energy in joules of a single photon of wavelength λ in meters is:

E = hc/λ

(6.63×10^-34 J·s) (3×10^8 m/s) / (655 nm) (1×10^-9 m/nm) = 3.03×10^-19 J.

The energy in kilojoules of 3 moles of photons of this wavelength is:

(3.03×10^-19 J) (6.02×10^23 /mol) (3.0 mol) / (1000 J/kJ) = 548 kJ.

Answer is 5.

How much energy in kJ do 30 moles of photons all with a – How much energy in kJ do 30 moles of photons all with a wavelength of 655 nm from CHEM 105 at Ivy Tech Community College of Indiana9. How much energy (in kJ) do 3.0 moles of photons, all with a wavelength of 655 nm, contain? A) 183 kJ B) 303 kJ C) 394 kJ D) 548 kJ E) 254 kJ 10. Determine the longest wavelength of light required to remove an electron from a sample of potassium metal, if the binding energy for an electron in K is 1.76 × 10 3 kJ/mol.I am wondering if I would need to find out the wavelength of 1 mole of these photons first and then carry out the same steps as I did when looking for the energy of the single photon. So: if I converted nm to m first, then: 6.23×10^11m X 6.022×10^23 = _____m. and plug that into my E= h * c/wavelength = _____ and convert that to kilojoules?

How much energy in kJ do 30 moles of photons all with a – 25) Determine the longest wavelength of light required to remove an electron from a sample of potassium metal if the binding energy for an electron in K is 1.76 × 103 kJ/mol. A) 147 nm B) 68.0 nm13) How much energy (in kJ) do 3.0 moles of photons, all with a wavelength of 675 nm, contain? A) 177 kJ. B) 354 kJ. C) 418 kJ. D) 532 kJ. E) 238 kJ. 14) Electromagnetic radiation with a wavelength of 575 nm appears as yellow light to the human eye. The energy of one photon of this light is 3.46 × J. Thus, a laser that emits of energy in aPhoton energy is the energy carried by a single photon with a certain wavelength and frequency. These terms are related by an equation. E = hv where h is the Planck's constant (6.626 x 10-34 J s), v is the frequency which is related to the wavelength by: λv = c where λ is the wavelength and c is the speed of light (3.00 x 108 m/s)

How would I calculate the energy (in kilojoules) for 1 – 1. 394 kJ 2. 183 kJ 3. 254 kJ 4. 303 kJ 5. 548 kJ. The energy in joules of a single photon of wavelength λ in meters is: E = hc/λHow Much Energy (In Kj) Do 3.0 Moles Of Photons, All With A Wavelength Of 655 Nm, Contain? Physics 0 1100 users searched for this homework answer last month and 58 are doing it now, let's get your homework done.How much energy (in {eq}kj {/eq}) do {eq}3.0 {/eq} moles of photons, all with a wavelength of {eq}655\, nm {/eq}, contain? Energy of the photon: The energy of the photon of the light is inversely