A graduated cylinder has 20 ml of water placed in it. An irregularly shaped rock is then dropped in the graduated cylinder and t
he volume of the rock and water in the cylinder now reads 30 ml. The mass of the rock dropped into the graduated cylinder is 23 grams The rock has a volume of
ml. and a density of
g/ml
For example, silver ion can be precipitated with hydrochloric acid to yield solid silver chloride. Because many cations will not react with hydrochloric acid in this way, this simple reaction can be used to separate ions that form insoluble chlorides from those that do not.
