For a weak acid with a pKa of 6.0, What would be the ratio of acid to salt at pH 5.

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#Question id: 5075

#XL - T Zoology

Which of the following developmental processes has been most recently completed in the amphibian embryo shown here?

 

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#Question id: 4947

#XL - T Zoology

The first genes on Earth were probably

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#Question id: 4612

#XL - T Zoology

The greatest number of endemic species is expected in environments that are ________.

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#Question id: 2314

#XL - T Zoology

Mitochondria are inherited from.

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#Question id: 12957

#XL - R Botany

Dichlorodiphenyltrichloroethane is related to the phenomenon of: