Asubstance in the solid phase (state) of matter has a. a definite shape and a definite volume b. a definite shape, but no definite volume c. no definite shape, but a definite volume d. no definite shape and no definite volume

Which of the following is a compound? a.carbon b.oxygen c.hydrogen d.water

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

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.