Which phrase describes carbon-14 dating? O uses the rate at which nitrogen-14 decays into carbon-14
dates the remains of organisms to determine when they died
O measures the number of unstable elements in ancient volcanic rocks
determines the age of ancient fossils older than 50,000 years old

Smog is the term used to describe the combination of fog and smoke

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

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.