An electron in the hydrogen atom makes a transition from an energy state of principal quantum numbers n i
to the n =2 state. If the photon emitted has a wavelength of 434
nm, what is the value of n i
?

Suppose you got a low yield of benzoin from your benzoin condensation reaction and thus only have 0.300 g of benzoin to use as the starting material for this reaction. how much concentrated nitric acid should you add? (concentrated nitric acid is 15.8 m). write your answer in the form x. xx ml

Which step in naming unsaturated hydrocarbons is used for alkenes but not alkynes

Use the de broglie's wave equation to find the wavelength of an electron moving at 4.5 × 106 m/s. show your work. note: h= plank's constant (6.62607 x 10-34 j s)