1) Calculate the frequency associated with light of wavelength 740 nm.
2) Microwaves have frequencies in the range 109 to 1012 /s (cycles per second), equivalent to between 1 gigahertz and 1 terahertz. What is the wavelength (in meters) of microwave radiation whose frequency is 2.157 x 1010 /s ?
2007-10-25 04:48:17 · 2 answers · asked by keya_na 2 in Science & Mathematics ➔ Chemistry
Frequency and wavelength are related through speed:
ν = s/λ, and λ = s/ν
where ν is frequency, s the speed and λ the wavelength. For all the electromagnetic waves including light and microwaves, s is the speed of light c = 2.998x10^8 m/s. Now the rest of the problem is easy math.
You will do the math.
2007-10-28 13:06:12 · answer #1 · answered by Hahaha 7 · 0⤊ 0⤋
a million) discover moles of M: Calcuate the variety of moles of M via the ratio (3x/2) = 0.2696 x = 0.179733 moles 2) discover the mass of Bromine: employing the variety of moles of Br2 and molecular mass, calculate the mass it has, and minus it from the entire, giving the mass of M 3)examine the periodic table: in case you do (moles / mass) of M, you get the molecular mass of that factor.examine which factor has that molecular mass
2016-12-30 05:17:48 · answer #2 · answered by ? 3 · 0⤊ 0⤋