A transition in the Balmer series for hydrogen has an observed wavelength of 434 nm. What is the energy of this transition in kJ/mole

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Achemist has dissolved a certain substance in water. the chemist knows that more of the substance could be dissolved into the water before it stops dissolving. therefore

Why are people not able to skip a dive to the deepest part of the ocean