How did the experiement with the iron filings and sulfur compare with the experiment in which copper sulfate pentahydrate was heated?

both resulted in gas formation.

both resulted in color change.

both involved chemical change.

both involved physical change.

one involved chemical change while the other involved physical change.

16. in a reaction that has reached equilibrium, a. the forward and reverse reactions are occurring at the same rate. b. the reactants and products are in equal concentrations. c. the forward reaction has gone further than the reverse reaction. d. there are equal numbers of atoms on both sides of the equation. e. a, b, and d are correct.

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate

Calculate the molarity of each aqueous solution: a. 78.0 ml of 0.240 m naoh diluted to 0.250 l with water b. 38.5 ml of 1.2 m hno3 diluted to 0.130 l with water