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2.8x10-19 J
E = hν, and ν = c/λ. λ is wavelength, c is the speed of light (3.0 x 108 meters/second), E is energy, and h is 6.626 x 10-34. 3.0 x 108/715 = 419580.42. 419580.42 x 6.626 x 10-34 = 2.78 x 10-28 joules.
Wiki User
∙ 7y ago
Wiki User
∙ 13y agoI assume you want energy per kilojoules a mole since the wavelength is in nanometers.
Energy =1.196 X 10^5 nm*kj/mol/wavelength
E = 1.196 X 10^5 nm*kj/mol/715 nm
= 167 kilojoules/mol of photons
If you just wanted Joules, then this way is recommended.
( change 715 nm to 7.15 X 10^-7 meters )
Energy ( in Joules ) = Planck's constant * speed of light/wavelength in meters
E = ( 6.626 X 10^-34 J*s)(2.998 X 10^8 m/s)/( 7.15 X 10^-7 meters)
= 2.78 X 10^-19 Joules
Wiki User
∙ 12y ago575nm = 575 x 10-9 m C= λv 3.00 x 108 m/s = 575 x 10-9 m (v) v= 5.22 x 1014 Hz E= hv E= 6.626 x 10-34 J (sec) x (5.22 x 1014 1/sec) E= 3.46 x 10-19 J
Wiki User
∙ 13y agoE=hf
E=(6.63x10-34) x (700x10-9)
E= 4.61x10-40Hz
Wiki User
∙ 9y agoEnergy = hf = hc/wavelength
Energy = 1.986×10 e −25 / 518 x 10 e -9
= 3.834 x 10 e - 37 J
Wiki User
∙ 13y agoThe energy is E=hc/w= 1.25uevm/715m = 1.748nev.
Wiki User
∙ 13y ago2.8x 10(to the negative 19)J
Wiki User
∙ 13y ago2.96 x 10-19 J
Wiki User
∙ 11y ago2.88x10^-28 J
Wiki User
∙ 14y ago3 x 10-19 J
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