Uvc light used in sterilizers, has wavelengths between 100 to 280 nm. if a certain uvc wave has a wavelength of 219 nm, what is the energy of one of its photons in j? once you have the value, take it log (base 10) and enter that with three decimal places as your answer. do not enter units.

Awhite powder is added to a solution. the images show observations made before the powder is added, just after the powder has been added, and a little while later. (the liquid in the small beaker is phenol red solution.) what evidence shows that a chemical change has taken place?

Scuba divers use tanks of compressed air to them breathe. gases can be compressed because?

Time remaining 58: 10 an atom that has 84 protons and 86 neutrons undergoes a reaction. at the end of the reaction, it has 82 protons and 84 neutrons. what happened to the atom? it accepted radiation in a chemical reaction it donated neutrons to another atom in a chemical reaction it emitted an alpha particle in a nuclear reaction. it accepted protons in a nuclear reaction. mark this and retum save and exit next submit