How many moles of oxygen are present in a cylinder of 25.0 liters at a temperature of and a pressure of 1.00 atm?

Which of the following best defines homeostasis? forming identical cells breaking down glucose maintaining stable internal conditions increasing an organism's temperature

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?

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp