Question

a photon of violet light has a wavelength of 423 nm, calculate the frequency

what is the energy in kilojoules per mole?

Answer 1

Escquency & vocc - speed of Light V = 3 x 108 m/s 423 nm Im= 100 m Inma 10-9 m. 1= 3x10 m 423810-9 m V=3x10 6 +9 = 7.092 x 10 1 = 7.0 92 810 u An or tot E = hv ht Planck Lonstant & 6.626 X10 IS E = 6.626x10 -34 J$ x 7.092x104 E = 6.6268 7.09 2210 = 4.69810-19 I I kJ = 1000 Joules 1 Joule = 103 kJ No. of particles Contained in one mole = 6.0228 1023ml = 4.69x10-14x10 X 6.0 22 X 10 23 Tue 1 E 282.43 kJ mal