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Swer all parts. (a) What is the wavelength (in nm) of radiation that has an energy ...

Be sure to answer all parts.

(a) What is the wavelength (in nm) of radiation that has an energy content of 3.55 × 103 kJ/mol?


__× 10__ nm

(b) In which region of the electromagnetic spectrum is this radiation found?


gamma ray


visible


radio wave


microwave


X-ray


ultraviolet


infrared

User Blexy
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1 Answer

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Final answer:

The wavelength of radiation with an energy content of 3.55 × 10^3 kJ/mol is 9.29 nm.

Step-by-step explanation:

The wavelength (λ) of radiation can be calculated using the equation: c = λν, where c is the speed of light (3.00 × 10^8 m/s) and ν is the frequency of the radiation. To find the wavelength of radiation with an energy content of 3.55 × 10^3 kJ/mol, we need to convert the energy into joules per photon using the equation: 1 kJ/mol = 6.022 × 10^23 J/photon. Once we have the energy per photon, we can use the equation E = hν, where E is the energy and h is Planck's constant (6.626 × 10^-34 J·s), to find the frequency. Then, we can rearrange the equation c = λν to solve for the wavelength (λ).

Step-by-step explanation:

  1. Convert the energy into joules per photon: 3.55 × 10^3 kJ/mol × (6.022 × 10^23 J/photon / 1 kJ/mol) = 2.14 × 10^-20 J/photon.
  2. Use the equation E = hν to find the frequency: 2.14 × 10^-20 J/photon = (6.626 × 10^-34 J·s)ν. Solve for ν: ν = (2.14 × 10^-20 J/photon) / (6.626 × 10^-34 J·s) = 3.23 × 10^13 Hz.
  3. Use the equation c = λν to find the wavelength: (3.00 × 10^8 m/s) = λ × (3.23 × 10^13 Hz). Solve for λ: λ = (3.00 × 10^8 m/s) / (3.23 × 10^13 Hz) = 9.29 × 10^-6 m = 9.29 nm.

User Hakan ERDOGAN
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