The work function of metal is the minimum energy required to produce photoelectric effect on that metal, and the work function for potassium metal is 220. kJ/mol (a) What is the minimum energy in Joules required to eject an electron from potassium metal? (b) What is the longest wavelength of light, in nanometers (nm), capable of producing photoelectric effect on potassium metal? (c) If the surface of a piece of potassium metal is shone with a green light having wavelength, 2. = 510. nm, what is the kinetic energy of the ejected electron? (d) What is the speed (in m/s) of the ejected electron? (Planck's constant, h= 6.626 x 10 34 J•s.; speed of light, c = 3.00 x 10° m/s; m = 9.11 x 10 ³1 kg; i ev = 1.60 x 10-19 J; 1J=1 kgm³/s²)
The work function of metal is the minimum energy required to produce photoelectric effect on that metal, and the work function for potassium metal is 220. kJ/mol (a) What is the minimum energy in Joules required to eject an electron from potassium metal? (b) What is the longest wavelength of light, in nanometers (nm), capable of producing photoelectric effect on potassium metal? (c) If the surface of a piece of potassium metal is shone with a green light having wavelength, 2. = 510. nm, what is the kinetic energy of the ejected electron? (d) What is the speed (in m/s) of the ejected electron? (Planck's constant, h= 6.626 x 10 34 J•s.; speed of light, c = 3.00 x 10° m/s; m = 9.11 x 10 ³1 kg; i ev = 1.60 x 10-19 J; 1J=1 kgm³/s²)
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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![The work function of metal is the minimum energy required to produce photoelectric effect on that
metal, and the work function for potassium metal is 220. kJ/mol
(a) What is the minimum energy in Joules required to eject an electron from potassium metal?
(b) What is the longest wavelength of light, in nanometers (nm), capable of producing photoelectric
effect on potassium metal? (c) If the surface of a piece of potassium metal is shone with a green light
having wavelength, 2. = 510. nm, what is the kinetic energy of the ejected electron? (d) What is the
speed (in m/s) of the ejected electron?
(Planck's constant, h= 6.626 x 10 34 J•s.; speed of light, c = 3.00 x 10° m/s; m = 9.11 x 10 ³1 kg;
i ev = 1.60 x 10-19 J; 1J=1 kgm³/s²)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff3c420b9-c093-4930-b059-11b7233962d0%2Fc5259b51-7d1d-4eef-87b2-fa20a44dd352%2Fm9ah9ik_processed.png&w=3840&q=75)
Transcribed Image Text:The work function of metal is the minimum energy required to produce photoelectric effect on that
metal, and the work function for potassium metal is 220. kJ/mol
(a) What is the minimum energy in Joules required to eject an electron from potassium metal?
(b) What is the longest wavelength of light, in nanometers (nm), capable of producing photoelectric
effect on potassium metal? (c) If the surface of a piece of potassium metal is shone with a green light
having wavelength, 2. = 510. nm, what is the kinetic energy of the ejected electron? (d) What is the
speed (in m/s) of the ejected electron?
(Planck's constant, h= 6.626 x 10 34 J•s.; speed of light, c = 3.00 x 10° m/s; m = 9.11 x 10 ³1 kg;
i ev = 1.60 x 10-19 J; 1J=1 kgm³/s²)
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