객관식
How much energy does an individual photon of 470 nm light possess?
104
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9. Quantum Mechanics
The Energy of Light
뒤로9. Quantum Mechanics
The Energy of Light
- 객관식Ultraviolet radiation and radiation of shorter wavelengths can damage biological molecules because they carry enough energy to break bonds within the molecules. A carbon-carbon bond requires 348 kJ/mol to break. What is the longest wavelength of radiation that can still break a carbon-carbon bond?751views
- 미해결 질문
Hospital X-ray generators emit X-rays with wavelength of about 15.0 nanometers (nm), where 1nm = 10−9 m. What is the energy of a photon of the X-rays?
1106views - 객관식The energy of a single photon is 2.441 × 10⁻²⁰ J. What is the energy of one mole of these photons, in kilojoules?668views
- 객관식How many photons are contained in a flash of green light (525 nm) that contains 189 kJ of energy?698views
- 객관식What is the frequency of a photon emitted when an electron in a hydrogen atom transitions from n = 3 to n = 2? (R_H = 1.097 x 10^7 m^−1)643views
- 미해결 질문
How are wavelength, frequency, and energy related for photons of light?
1776views - 미해결 질문Calculate the energy of a photon of electromagnetic radiation at each of the following wavelengths.1070views
- 객관식A laser pulse with a wavelength of 535 nm contains 4.85 mJ of energy. How many photons are in the laser pulse?830views
- 객관식When Cu^{2+} ions in water absorb visible light, the absorbance typically occurs around a wavelength of 800 nm. What is the energy of this absorbance in electron volts (eV)?97views
- 객관식Which of the following occurs as the energy of a photon increases?118views
- 객관식What is the source of energy that provides the boost for electrons during photosynthesis?581views
- 객관식Assuming that radiation with λ = 15.0 cm is used, that all the energy is converted to heat, and that 4.184 J is needed to raise the temperature of 1.00 g of water by 1.00 °C, how many photons are necessary to raise the temperature of 250 g of water by 1.00 °C?838views
- 객관식What is the energy in kJ/mol of infrared radiation with a wavelength of 1.51 × 10⁻⁶ m?651views
- 미해결 질문
Calculate the energy of the orange light emitted, per photon, by a neon sign with a frequency of 4.89 × 1014 Hz.
1573views