The work function of an element is the energy required to remove an electron from the surface of the solid element. the work function for lithium is (that is, it takes kj of energy to remove mole of electrons from mole of atoms on the surface of metal; ). what is the maximum wavelength of light that can remove an electron from an atom on the surface of lithium metal?

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.

The arrangement of particles is most ordered in a sample of

State one important difference between a physical change and a chemical change?