A scientific article about the universe will most likely describe the universe as?

28. which is not a reason that water is used to store spent fuel rods from nuclear power plants? water increases the speed of the chain reaction in the fuel rods. water protects nuclear power plant workers from the high temperature and radiation of the fuel rods. water acts as a radiation shield to reduce the radiation levels. water cools the spent rods. salts action

How is the electron sea model of metallic bonding different from the band theory? how are they the same? give at least one similarity and one difference between the models

Hydrogen has three isotopes 1h, 2h, and 3h. what is the difference between these three isotopes?