# ap chem0 frequency

how do u do this type of problem...

What is the frequency of a photon with a wavelength of 2.25 102 nm? (The speed of light in a vacuum is 2.998 108 m/s. Planck's constant is 6.626 10-34 Js

c = fw. c is speed of light which you have, f is frequency for which you must solve, w is wavelength which you have. One unknown. Solve for f.
Post your work if you get stuck. Remember to convert nm to meters.

i did 2.99E8 / 2.25E11 and i got 1.33E-3 but this homework is online and it said the answe is wrong and i have the right right sig figs

225 nm is NOT 2.25E11

nm= 10^-9
225nm= 10^-7 m check my thinking

You should be getting 1.33 x 10^15 hz

1. 👍 0
2. 👎 0
3. 👁 213

## Similar Questions

1. ### chemistry

determine the end (final) value of n in a hydrogen atom transition, if the electron starts in n=2 and absorbs a photon of light with a frequency of 4.57 x 10^14 Hz.

2. ### physics

what is the wavelength of an X- ray photon with energy 10 keV?(10,000eV)? what is the frequency?

3. ### chemistry

Calculate the energy of a photon of radiation with a frequency of 8.5 x 10^14 Hz. Use E=hv, where h = 6.626 x 10^-34

4. ### Chemistry

Restart the PhET simulation and set it up in the following manner: select Oscillate, select No End, and use the parameters in parentheses by sliding the bars for Amplitude (1.00 cm), Frequency (1.20 Hz ), Damping (none), and

1. ### Chemistry

Determine which H atom transition(iinitital, nfinal) was responsible for the absorption of a photon with a frequency of 4.57 x 10^14 Hz. [RH = 2.18 x 10^-18 J; h = 6.63 x 10^-34 J s]

2. ### Physics

A monochromatic light source used in a diffraction experiment has a wavelength of 4.60 x 10- 7 m. (a) What is the frequency of this light? When you input large numbers such as those in this problem, then input the numbers with

3. ### Chemistry

Calculate the frequency of a photon of orange light whose wavelength is 6.2*10^5m. (meters)

4. ### chemistry

Calculate the energy of a photon of electromagnetic radiation at each of the following frequencies. (A) 103.1 MHz (typical frequency for FM radio broadcasting) (B) 1015 kHz (typical frequency for AM radio broadcasting) (assume

1. ### Physics

The energy of a photon is directly proportional to its..... I think it may be frequency. Is that correct?

2. ### Physical Science

What is the frequency of a photon of blue light, if it has a wavelength of 440 nm?

3. ### Physics

A photon has a frequency of 7.3 × 10–17 Hz. Planck’s constant is 6.63 × 10–34 J•s. The energy of the photon, to the nearest tenths place, is × 10–50 J.

4. ### science

Find the frequency and wavelength of a 50-MeV gamma-ray photon.