The unit 1 electronvolt (1 ev) is defined as the energy acquired by an electron as it moves through a potential difference of 1 v. suppose two states differ in energy by 1.0 ev. what is the ratio of their populations at (a) 300 k and (b) 3000 k?

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

From the options provided for each element below, choose the properties that it may have based on its location in the periodic table fluorine (f): highly reactive nonmetal shiny a conductor

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.