The gram atomic mass of oxygen is 16.0 grams per mole. How many atoms of oxygen does this mass represent?

Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution? a. 3.88 m, b. 1.03 m, c. 1.5 m, d. 15.5 m

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.

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy