Sodium is a soft metal with a relatively low work function. Light corresponding to 476 kJmol−1 was shone on the sodium metal, and the electrons detected had a velocity of 9.57×105ms−1. What is the work function of sodium metal based on this data? The mass of an electron is 9.11×10−31kg.

Based on the data given, the work function of sodium metal is equal to .

Given the following data:

Avogadro constant =

To determine the work function of sodium metal based on this data:

Mathematically, the photoelectric effect is given  by the formula:

Where:

However, since we were given the photo electric work function of light that was shone on the sodium metal, we would calculate the work function of sodium metal as follows:

Read more: link

7.93 * 10^-19 J

Explanation:

Kinetic energy of the electrons = 1/2 mv^2

Hence;

KE = 1/2 * 9.11×10^−31 (9.57×10^5)^2

KE = 4.975 * 10^-23 J

Energy of incident light = 476 * 10^3/6 * 10^23 = 79.3 * 10^-20 J

From Einstein's photoelectric equation;

KE = E - W

Where;

KE = kinetic energy of ejected electron

E = energy of incident photon

W = Work function of the metal

Hence;

W = E - KE

W = 7.93 * 10^-19 - 4.975 * 10^-23

W = 7.93 * 10^-19 J

- "the acute form of diverticulitis can manifest itself with one or more severe attacks of infection and inflammation.

the inflammation of diverticulitis can eventually result in a bowel obstruction, which may cause constipation, thin stools, diarrhea, abdominal swelling or bloating, and abdominal pain."

can you attach the