What properties you can determine for carbon and calcium based on their respective locations on the periodic table

Anyone who's in connections academy chemistry b have the factors that affect the rate of a reaction portfolio already done?

Problem page a jet airplane reaches 846. km/h on a certain flight. what distance does it cover in 13.0 min? set the math up. but don't do any of it. just leave your answer as a math expression. also, be sure your answer includes all the correct unit symbols.

Amatch has about 21 milligrams of red phosphorus coating the tip. how many atoms of phosphorus is this?