Scientists used blank

dating to determine Earth's age.

Answer:

5.6⋅10−^19  j

do you need the explaination?

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).

The answer to your question would be c. mineral oil