An atom in its natural state has an overall charge

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution

How is the atomic number of a nucleus changed by alpha decay

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.