What is a classified as an inner transition element? - calcium -copper -fermium -helium

In which environment would primary succession occur? a forest with a few remaining trees after a recent wildfire an area of exposed rock after a glacier melts away beach that is exposed to the air at low tide an abandoned baseball field in a small town

If 90.0 grams of ethane reacted with excess chlorine,how many grams of dicarbon hexachloride would form

Which is an example of the practical pursuit of alchemy? a. forming perfect substances. b. transforming base metals. c. developing metalworking techniques. d. linking spiritual characteristics with material substances.