272cm³ of carbon (iv) oxide were collected over water of 150⁰c and 782mmHg pressure. Calculate the volume of the dry gas at s. t.p? (s. v.p. of water at 150⁰c is 12mmhg)

Can someone me with questions 12 and 13 plz.

How have the greenhouse gasses increased from the year 2000 to 2018

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.