Oxygen 22 has a half life of 2.25 seconds. What percent of the sample is left after 2.25 seconds?

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

What is the molar mass of potassium nitrate, kno3

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.