Suppose you could do experiments with your unknowns in which you reacted each of them with oxygen to form an oxide, as
Mendeleev did. How would this information help you determine the
location of the compounds in the periodic table?

30litre of li2o is 1.0002mole approximately 1 mole

257 grams h2o i think

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).

Putting salt in vinegar water