Question

7. A 342 nm laser pulse contains 2.65 kJ of energy. How many moles of photons are in the laser pulse?

Answer 1

wavelength = 342 nm -> 342x10 m 6:636X16343x108 342x109 = 5.81x1o'ng Energy perphotons = 5.81x100 g Number of photons = Total energy energy perphoton = 2.65*10* 5.slx10199 54:56x10² photons 2/ moles of photons = 4.56*10² 6,023x1023 = 0.00757 moles = 7.57x16mdes