What minimum frequency of light is required to ionize potassium?The energy required to ionize potassium is 419kJ/mol? Chemistry The photoelectric work function of a metal is the minimum energy needed to eject an electron by irradiating the metal with light. For calcium, this work function equals 4.34 x 10-19 J.
This video shows how to remove black mastic or carpet glue of concrete floor using FranMar's Bean-e-doo mastic remover. This is an easy and safe way to remove black mastic without toxic fumes. for more information visit www.sealgreen.com.1  Howto & Style. 2  Standard YouTube License.his video shows how to remove black mastic or carpet glue of concrete floor using FranMar's Bean-e-doo mastic remover. This is an easy and safe way to remove black mastic without toxic fumes. for more information visit www.sealgreen.com. 1  Howto & Style. 2  Standard YouTube License.
1 Do it quickly until the mixture is liquid. 2  Do not apply the mask all over the face. 3  Treat T-zone and problem zones. 4  Wait until the mask dries. 5  Then gently roll off the mask from edges to center. 6  Try to remove the whole mask. 7  Do that carefully & slowly. 8  Hold the skin with your fingertips.se oatmeal & baking soda to remove blackheads on the nose, forehead, chin. 1  Mix half a teaspoon of baking soda, a quarter teaspoon of salt and a teaspoon of sour cream or yogurt (you can substitute 1 tablespoon of kefir). 2  Use the mixture like a scrub.