Filtering technologies involve the use of something that blocks some particles, but leaves most particles able to pass through the filiter. List three ways in which filters affect you or one of your family members.

What layer of the atmosphere is directly above the troposphere?

What effect might melting sea ice have for people who live in coastal areas?

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.