If the instrument response is 671 nm what is the energy of the light in kJ/mol?

Question

Question

science chemistry

Answer 1

Answer #1

E =[(Na) hc] / (wavelength)

Wavelength = 671 • 10^-9m

h = 6.626 • 10^-34 J • s

c = 3 • 10^8ms-1

Na = 6.022 • 10^23

E(energy) = (6.022 • 10^23 • 6.626 • 10^-34 • 3 • 10^8) / ( 671 • 10^-9)

E(energy) = ( 0.1197) / ( 671 • 10^-9)

E(energy) = 178398.4J/mol

[ 1KJ/mol = 1000J/mol ]

E(energy) = 178.3984KJ/mol ~ 178.4KJ/mol

Hence

Light energy is 178.4KJ/mol

Answer 2

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