Arrange the following elements in order of increasing atomic radius.

K, Li, O, Se

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?

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.

No copying 15 pts how does a free-body diagram tell you about the net force on an object?