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‼️Élø ‼️
E = Nhc / λ
= 6.02 x 10^23 x 6.6 x 10^-34 x 3 x 10^8 / 242 x 10^-9
= 4.9 x 10^5 J/mol
= 490 x 10^3 J/mol
or
= 500 kJ /mol
have a great day ! ❤️☺️
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