The oxidation numbers of nitrogen in nh4+, n2o5, and nano3 are, respectively:

+3, +3, +5

-3, +5, +5

+3, +5, -4

-3, +3, +4

Describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? )

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?