Aphysical property of a solid used to describe its surface

The molecular formula for caffeine is cshion402. which of the following elements is not found in caffeine?

  the mississippians were considered to be  horticulturalists, which means they were

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.