What is the energy of a 425 nm photon?
a) 2.82 x 10^-40 J
b) 1.6 x 10^-27 J
c) 4.67 x 10^-19 J
d) 4.67 x 10^-28 J
I don't get any of these answers. =S Please help...
E = hc/wavelength = (C)
Post your work and I'll look for the error.
Oh, I made some mistake with the values... now I got 4.67x10^-19 well actually 4.68x10^-19 but that's not in the options... is this answer right?
To calculate the energy of a photon, you can use the equation E = hc/λ, where E is the energy of the photon, h is Planck's constant (approximately 6.626 x 10^-34 J·s), c is the speed of light (approximately 3.00 x 10^8 m/s), and λ is the wavelength of the photon.
In this case, the wavelength of the photon is given as 425 nm. To use the equation, you need to convert the wavelength to meters. Remember that 1 meter is equal to 10^9 nanometers (nm). So, 425 nm is equal to 425 x 10^-9 meters.
Now, plug the values into the equation:
E = (6.626 x 10^-34 J·s) * (3.00 x 10^8 m/s) / (425 x 10^-9 meters)
Calculating this expression will give you the energy of the photon in joules (J), which is the unit for energy.
Let's go through the calculations using a calculator:
E = (6.626 x 10^-34) * (3.00 x 10^8) / (425 x 10^-9)
E = 1.6383 x 10^-19 J
So, the energy of a 425 nm photon is approximately 1.6383 x 10^-19 J.
Comparing this value to the answer choices, we see that the correct answer is option c) 4.67 x 10^-19 J.
It seems like there may have been a typo in the answer choices you provided. The correct answer should be c) 4.67 x 10^-19 J, not d) 4.67 x 10^-28 J.