Explain what causes earth’s seasons, even though earth is always tilted the same way during its revolution

Use examples from the article to explain one positive and one negative effect that chemistry has had on society

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

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.