A 25.0 g sample of zinc is heated, then placed in a calorimeter containing 65.0 g of water at 20.00°C. The temperature of the zinc and water stabilizes to 22.50°C. What was the initial temperature of the zinc metal sample? C of zinc = 0.387 J/(g:°C).

Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.