Question 9
Wear eye protection and disposable gloves when handling solutions. Work under teacher supervision. Investigation 1: an iron nail is placed in about 200 cm³ of copper nitrate solution in a beaker on an electronic balance. The beaker is covered with a watch glass while it stands for a week; the watch glass is removed before the final weighing.
Remove the watch glass and place the beaker containing the solution and iron nail on the electronic balance. Record the final mass.
Final mass = ______
Remove the watch glass and place the beaker containing the solution and iron nail on the electronic balance. Record the final mass.
Final mass = ______
