Calculate the fraction of atom sites that are vacant for copper (cu) at a temperature of 973°c (1245 k). assume an energy for vacancy formation of 0.90 v/tom. (b) repeat this calculation room temperature (298) c) what is too of n/n1246 k) and n/n (298 k)?

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.

What are the chemical names of these compounds? ke: mg3n2: reset next

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.