The near infrared region of the electromagnetic spectrum extends from the end of the visible region at a wavelength of 700 nm to the mid-infrared at 2500 nm. What is the frequency of near infrared light with a wavelength of 1200 nm? (1nm = 1x10−9m)?

The frequency of near infrared light with a wavelength of 1200 nm =2.5 x 10^14 s-1

Explanation:

In an electromagnetic spectrum,

F= C/ λ

where F= FREQUENCY

C= SPEED OF LIGHT=3.0 x 10 ^8m/s

λ= WAVELENGTH= 1200nm to m becomes 1200 x 10^-9m

since 1nm = 1x10−9m

The frequency of near infrared light with a wavelength of 1200 nm= Speed of light / Wavelength

=3.0 x 10 ^8m/s/1200 x 10^-9m

The frequency of near infrared light with a wavelength of 1200 nm=2.5 x 10^14 s-1

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.

2b2t

explanation:

2b2t