Radiation from a sodium lamp, such as a streetlight, appears as yellow light and has a wavelength of 589 nm. A burst of yellow light from the lamp contains 609 kJ of energy.  How many moles of photons are contained in the burst of light?

Purple light can have a wavelength of 380. nm. What is the energy of a mole of photons of this light?

Radio waves from an FM radio station have a frequency of 106.1 MHz. Calculate the energy of one photon of light at this frequency.

At noon on a clear day, sunlight reaches the earth's surface at Madison, Wisconsin, with an average intensity of approximately 2.00 kJ-s-1-m-2. If the sunlight consists of photons with an average wavelength of 510.0 nm, how many photons strike a 9.00 cm? area per second? photons per second: photons · s-1

Electrons in potassium ions (excited by heating in a flame) emit visible light whose wavelength is 409nm. What is the frequency of this light? What is the energy of one quantum of this light? What color light is it?

The human eye is a complex sensing device for visible light. The optic nerve needs a minimum of 2.0 × 101' J of energy to trigger a series of impulses that eventually reach the brain. How many photons of blue light (475 nm) are needed?

Convert between number of photons and energy given a particular wavelength. Low level light therapy (LLLT) using RED light was observed to promote wound healing. The daily dose provided was 24 J/cm. Given the wavelength of 635 nm, how many photons were required to deliver the dose to a 1 cm? area?

By which process does a molecule absorb light? O An electron goes from a lower energy level to a higher energy level. O A proton goes from a higher energy level to a lower energy level. O An electron goes from a higher energy level to a lower energy level. OAn isotope goes from a lower energy level to a higher energy level. OA proton goes from a lower energy level to a higher energy level. O An isotope goes from a higher energy level to a lower energy level.

5. The human eye can detect as little as 2.5*10-¹6 joules of light. How many photons of green (510nm) light can your eye detect? How many photons of red (620nm) light can your eye detect? 6. An unknown metal sample is interrogated using a beam of X-rays to liberate electrons which are then caught by a detector that determines their kinetic energy. A beam of X-rays with wavelength 9.54nm irradiate the surface of this metal, and the detector observes electrons with kinetic energies equal to 7.3716*10 J. What is the binding energy of this unknown metal sample.