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.
The OSHA Construction Standard (29 CFR 1926.1101) classifies disturbance, removal, or demolition of structures with ACM sink undercoat black mastic as Class II asbestos work which requires specialized training, engineering controls, etc. We recommend that these materials be removed by a licensed abatement contractor confirming that they do not cut, sand, grind or abrade the approximate 6 square feet of sink undercoat black mastic.