Posted by **AJ** on Tuesday, November 4, 2008 at 12:12am.

I need help with these two problems:

1.The H-Cl bond has a frequency of vibration of 8.662 multiplied by 10^13 Hz. What wavelength (in µm) corresponds to that frequency?

-is the answer just (3.00x10^8 m*s)/(8.662x10^13 s^-1)

2.A flame has a characteristic color due to emissions of photons of wavelength 525 nm. What is the mass equivalence of 2 mol photons of this wavelength (1 J = 1 kg·m2/s2)?

- Chemistry -
**DrBob222**, Tuesday, November 4, 2008 at 9:40am
For 1 you have it correct except that the problem asks for the answer in micrometers and your answer has the unit of meters.

For 2,

E = hc/wavelength.

Remember to convert wavelength from nm to meters and that will give you the energy for one photon. Multiply that by 2 to give you two photons and set that equal to mc^2 to calculate mass.

## Answer this Question

## Related Questions

- Chemistry - Covalent bonds in a molecule absorb radiation in the IR region and ...
- chem - an energy value of 3.313x10^-19 joules is needed to break a chemical bond...
- Science - A string of an instrument is stretched between two points 25.0 cm ...
- Chemistry - E=hv E=energy h= Planck's constant =6.626 x 10^-34 v= frequency 1. ...
- physics - A harpsichord string of length 1.60 m and linear mass density 25.0 mg/...
- Physics - A harpsichord string of length 1.50 m and linear mass density 26.0 mg/...
- Chemistry - A sample of light has a wavelength of 2.61 x 10^-12 m. What is it's ...
- Chemistry Check - I just want to make sure I did the following problem right, ...
- Chemistry - Determine the frequency of light with a wavelength of 3.728 × 10 &#...
- Science please answer? - what is the wavelength and frequency if the ...

More Related Questions