El oro metálico cristaliza en una cúbica centrada roja en las caras. La longitud de la celda unitaria es igual a 4.007A. ¿Cuál es la densidad del oro?

Woah that’s a lot to read xd i’ll try though. i’ll get back t you if. i know the andwer

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 is accuracy