Amixture of equal amounts of two enantiomers

Racemic mixture of racemate

Explanation:

A racemic mixture or racemate is a mixture with the same amount of left- handed  and the right handed enantiomers.

The main characteristic of a racemic mixture is that is optically inactive, that means that can not rotate polarized light. Also a racemic mixture has other different physical properties than the pure enantiomers.