Me soon im confused much mass would a mole of hydrogen molecules contain? recall that hydrogen is diatomic. g/mol

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 falsegravitational force is independent of medium and depends only on the masses of the two objects and the distance between them.