Which of the following is true about the mass of the reactants in a chemical reaction?

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.

How many grams of magnesium metal will react completely with 8.3 liters of 5.5m hcl? show all work

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?