compare this extinction coefficient with the value you determined for curcumin in the prelab. Explain the likely sources of any differences.

The answer is celsius 

Answers are 1,2,4 its correct on edgenuity.

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).

Ithink the answer is d