Explain the relationship between forward and reverse reactions at equilibrium, and predict how changing the amount of a reactant (creating a stress) will affect that relationship

The modern periodic table has groups.

Different isotopes indicate that an element will have different numbers of

How many liters of hydrogen gas will be produced at stp from the reaction of 7.179×10^23 atoms of magnesium with 54.219g of phosphoric acid (h3po4) the equation is 3mg + 2h3(> mg(po4)2+3h2