The number of vacancies in some hypothetical metal increases by a factor of 6 when the temperature is increased from 1080 K to 1180 K. Calculate the energy (in kJ/mol) for vacancy formation assuming that the density of the metal remains the same over this temperature range.

I’m pretty sure it’s false i’m not sure

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 : )