A chemistry graduate student is studying the rate of this reaction: 2SO3(g) 2SO₂(g) + O₂(g) She fills a reaction vessel with SO3 and measures its concentration as the reaction proceeds: time (seconds) [s03] 0 0.0100M 10. 0.00385M 20. 0.00238M 30. 0.00172M 40. 0.00135M Use this data to answer the following questions. Write the rate law for this reaction. Calculate the value of the rate constant k Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol. rate = k k = 0 x10 0.0 X 2 3

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