In pre-lab question 3 you calculated the molar equivalents of diethyl amine. You should have obtained a number greater than 1. What is the purpose of excess diethyl amine? Refer to section 20-15 in Wade for assistance.

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.