Racemic mixtures are optically _____ because of ______ compensation.

Explanation

To solve the question "Racemic mixtures are optically _____ because of ______ compensation," we need to fill in the blanks with the appropriate terms.

### Step-by-Step Solution:

1. **Understanding Racemic Mixtures**:
- A racemic mixture is a mixture that contains equal amounts of two enantiomers (optical isomers) of a chiral molecule. Enantiomers are molecules that are mirror images of each other.

2. **Optical Activity**:
...