A fertilizer is advertised as containing 16.44% nitrogen (per mass). How many grams nitrogen are in 8.500 kg of the fertilizer?

Determine the wavelength of the light absorbed when an electron in a hydrogen atom makes a transition from an orbital in the n=3 level to an orbital in the n=7 level.

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?

If a solution contains 3 moles/liter of sodium chloride (nacl, made of sodium ions and chloride ions), what is the osmolarity of this solution