84000 kg / 425 L according to the rules for significant figures

18

60.0 - there are 3 significant numbers

Yeah, but what are you trying to ask?

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).