A fossil is found to have a 14C level of 72.0 % compared to living organisms. How old is the fossil?

The density would be 1.622

Hi; /c

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).

Ibelieve it is b. proton.hope my answer has you : )