Which of the following characteristics is common to both acids and bases? a. they produce ions when dissolved in water. b. they absorb oxygen ions when dissolved in water. c. they increase hydrogen ions when dissolved in a solution. d. they increase the hydroxide ions when dissolved in a solution.

Select the correct answer. which phrase correctly describes temperature? o a. average rotational kinetic energy of the particles in an object o b. average energy of the particles in an object c. average translational kinetic energy of the particles in an object od. all energy possessed by the particles in an object

Calculate the number of molecules present in 0.750 mol of mgo.

Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?