Two popular antacids tablets are Tums and Maalox. The active ingredient in both of these antacids is calcium carbonate, CaCO3. Tums Regular Strength tablets contain 0.747 g and
Maalox tablets contain 0.600 g of calcium carbonate. Compare the number of formula units of
calcium carbonate in both Tums and Maalox.

Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than

Sulfur dioxide and oxygen react to form sulfur trioxide during one of the key steps in sulfuric acid synthesis. an industrial chemist studying this reaction fills a 25.0l tank with 4.5 mol of sulfur dioxide gas and 4.5 mol of oxygen gas at 30.°c. he then raises the temperature, and when the mixture has come to equilibrium measures the amount of sulfur trioxide gas to be 1.4 mol. calculate the concentration equilibrium constant for the reaction of sulfur dioxide and oxygen at the final temperature of the mixture. round your answer to 2 significant digits.

•hydration •dissociation •dissolving which one goes to which