The human eye contains a molecule called11- cis -retinal that changes conformati

Question

The human eye contains a molecule called11-cis-retinal that changes conformation when struck withlight of sufficient energy. The change in conformation triggers aseries of events that results in an electrical signal being sent tothe brain. The minimum energy required to change the conformationof 11-cis-retinal within the eye is about 164kJ/mol. Calculate the longest wavelength visible to the humaneye. __________nm The human eye contains a molecule called11-cis-retinal that changes conformation when struck withlight of sufficient energy. The change in conformation triggers aseries of events that results in an electrical signal being sent tothe brain. The minimum energy required to change the conformationof 11-cis-retinal within the eye is about 164kJ/mol. Calculate the longest wavelength visible to the humaneye. __________nm

Explanation / Answer

We know that Energy , E = hc /
Where h = plank's constant = 6.625 * 10^-34 Js c = speed of light = 3 * 10^8 m/s = wave length = ? E = Energy = 164 KJ / mol                   =164*10^3 J / mol                  = 164*10^3 / ( 6.023 * 10^23 ) J                   =2.723*10^-19 J Plug the values we get = hc / E                                     = 7.300*10^-7 m                                     = 730*10^-9 m                                     = 730 nm

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.