A potassium vapor sign consists of K atoms which give off violet light ( = 425.4 nm). a. Calculate the frequency for this wavelength. b. Calculate the E when only one atom gives off light and when 0.333 moles of atoms give off light simultaneously. (c = 2.9979 x 108 m/s, h = 6.626 x 10-34 J*s)

Acm ruler with main graduations from 1 to 10 from left to right there are 10 secondary graduations between each of the main graduations there is a line that begins. at the left end of the ruler 10 secondary graduations to the left of the “1 main graduation the right end of the line ends on the eighth secondary graduation to the right of 3 how long is the line