Mg(s) + HCl(aq) −→ MgCl2(aq) + H2(g). What mass of HCl is consumed by the reaction of 2.28 mol of magnesium?
Answer in units of g.

What mass of MgCl2 is produced?
Answer in units of g.

What mass of H2 is produced?
Answer in units of g.

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).

D. h2o + h2o > h3o + oh- confirmed.

The law of conservation of mass states that a mass of an object or the amount of matter composed inside an object or thing will not change unless it is added or removed of the matter that is contained in the object itself.

When china's civil war resumed, the nationalists held an advantage because the nationalist had more soldiers  than the communist.