Read the list of elements given below. F, Cl, Br, I

Which of the following about the elements is true?

A. All of them are highly reactive metals

B. All of them are highly reactive nonmetals

C. F and Cl are reactive nonmetals and Br and I are highly reactive metals

D. F and Cl are reactive metals and Br and I are highly reactive nonmetals​

Which is a characteristic of mixtures?

How many miles of water are produced if 5.43 mol pbo2 are consumed

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.