Calculate the energy of a photon having a wavelength of 7.71 x 10^-5 m.

How many moles in .5g of sodium bromide?

Which best describes eras and periods?

How does water evaporating from a glass show that matter is made up of particles? a. the heat energy from the air causes the glass to fill up with water particles. b. the liquid water particles turn into water vapor that spreads in the air. c. the particles of the glass dissolve in water and cause it to evaporate. d. the tiny particles of the glass evaporate and seem to disappear.