Describe an acid or base in terms of its relationship to protons

Can someone me with questions 12 and 13 plz.

Complete each row of the table below by filling in the missing prefix or missing exponent.

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.