Identify the element from this electron configuration 1s2 2s22p 3s23p6 452 3d5

What happens when an acid dissolves?

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

1. list three scientific reasons cockroaches may fly.