What elements react with mercury?

Describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? )

1. list three scientific reasons cockroaches may fly.

4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.