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Dextrororatory alpha-pinene has a specif...

Dextrororatory `alpha-`pinene has a specific rotation `[alpha]_(D)^(20) =+51.3^(@)`. A sample of `alpha-`pinene containing both the enantiomers was found to have a specific rotation value `[alpha]_(D)^(20) =+30.8^(@)`. The percentages of the `(+)` and `(-)` enantiomers present in the sample are, respectively,

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