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1) In a reaction with a substance with a first-order reaction half-life of 0.315 s', please indicate how many half-lives have completely taken place after

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1) In a reaction with a substance with a first-order reaction half-life of 0.315 s', please indicate how many half-lives have completely taken place after 10 s. 2) Determine the standard molar entropy change for the combustion of ethene and for the combustion of methane (separately). Which reaction has a higher magnitude of entropy change

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