Multiple-concept example 3 reviews the concepts necessary to solve this problem. radiation with a wavelength of 238 nm shines on a metal surface and ejects electrons that have a maximum speed of 3.75 × 105 m/s. which one of the following metals is it, the values in parentheses being the work functions: potassium (2.24 ev), calcium (2.71 ev), uranium (3.63 ev), aluminum (4.08 ev), or gold (4.82 ev)?

Some molecular compounds, such as hcl, ionize completely in solution. for molecular compounds such as h2co3, most molecules do not ionize in solution. which describes the properties of these two solutes? a. hcl and h2co3 have the same effect on the properties of the solution. b. hcl raises the freezing point of water more than h2co3 does. c. hcl raises the boiling point of water more than h2co3 does.