Which of these elements is unlikely to have a reaction with any element or compound? rubidium (rb) magnesium (mg) cobalt (co) argon (ar)

Jessica is traveling from miami, florida, to chicago, illinois. using the map, tell one way the land will change during the second half of her trip.

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?

Suppose that a certain fortunate person has a net worth of $71.0 billion ($7.10×1010). if her stock has a good year and gains $3.20 billion (3.20×109) in value, what is her new net worth?