Calculate the frequency of the red light emitted by a neon sign ...

[Bernana]

Calculate the frequency of the red light emitted by a neon sign with a wavelength of 659.9 nm.
 
  A) 2.20  1014 s-1
  B) 1.98  1014 s-1
  C) 4.55  1014 s-1
  D) 5.05  1014 s-1
  E) 3.32  1014 s-1

Question 2

In an aqueous solution that is acidic, H3O+ is ________ than 1.0  10-7 and ________ than OH-.
 
  A) greater; less
  B) less; greater
  C) greater; greater
  D) less; less
  E) none of the above

Question 3

Calculate the wavelength (in nm) of the blue light emitted by a mercury lamp with a frequency of 6.88  1014 Hz.
 
  A) 229 nm
  B) 436 nm
  C) 206 nm
  D) 485 nm
  E) 675 nm

[kardosa007]

Answer to Question 1

C

Answer to Question 2

C

Answer to Question 3

B

[Bernana]

Excellent

[juliaf]

Gracias!