An archeological artifact was subjected to radiocarbon dating. the artifact showed a carbon-14 decay rate of 13.8 disintegrations/min per gram of carbon. carbon-14 has a half-life of 5715 years, and currently living organisms decay at the rate of 15.3 disintegrations/min per gram of carbon. what is the approximate age of the artifact?

Plz choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. is it possible for two different compounds to be made from the exact same two elements? why or why not? with a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?

How many atoms of mg are present in 97.22 grams of mg? 6.022 × 1023 2.408 × 1024 4.818 × 1024 5.855 × 1025

In 2002, the rare earth elements mine in mountain pass, california was closed because