The radioactive element carbon-14 has a half-life of 5750 years. a scientist determined that the bones from a mastodon had lost 72.6% of their carbon-14. how old were the bones at the time they were discovered?

8349 years* I am not sure *as the Half-Life is 5750 this means that 50% of the bone will be lost after 5750 yearsso 72.6% will be lost after 8349 years by using cross multiplication

Since there is the same amount of agn03 in both silver chloride and silver nitrate they produce the same amount of moles. therefore silver chloride produces the same amount of silver nitrate, so your answer is 15.0 moles of silver nitrate. i hope this !

Cause its being chemically applied?