The specific rotation for (+)-ibuprofen is +59.

1. what is the specific rotation for (?

2. what is the observed rotation for a 90 : 10 mixture of (+)-ibuprofen and ( ibuprofen?

3. what would be the observed rotation for a 60% ee sample of (+)-ibuprofen?

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it should be all of them because it asks if you included all of those in your answer

explanation:

b.

the accuracy of the data.

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.