Hiatus

Greetings all. After a 20 yr hiatus for general chemistry I thought it would be a good idea to jump right into Biochemistry.... I need help with the following question. "the pKa of the acid group in aspirin is 3.5. What percent of ...

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... experienced a slight cooling from 1946-75, and the cooling during that period was quite marked over the eastern United States. The cause of this hiatus in the warming is still under debate." (p. 16) "Health outcomes in response to climate change are the subject of intense debate. . ...

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... a constant-ßux proxy of sedimentation rate implies deposition of the K-T boundary clay in (1062)3 103 years, precluding the possibility of a long hiatus at the boundary and requiring extremely rapid faunal turnover. The K-T boundary at 65 million years ago (Ma) records a major mass-extinction ...

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