The longest wavelength of light that causes electrons to be ejected from the surface of a potassium metal plate is 539 nm. If 400 nm radiation is shone on potassium, what is the velocity of the ejected electrons?

Which statement is best described as a atom

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.

How does the motion of particles in a gas change as the gas cools