The wavelength of the characteristic, bright yellow-orange flame test color of sodium is 590 nm. calculate the average energy (δe) associated with this atomic emission line.

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

At the current rate, a graph of carbon dioxide produced by fossil fuels over time would slope upward slope downward be horizontal be vertical

To calculate the molarity of a solution, you need to know the moles of solute and the