Is this correct ? I need help

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?

How many moles of al3+ ions are in 1.25 moles of al2o3

16. in a reaction that has reached equilibrium, a. the forward and reverse reactions are occurring at the same rate. b. the reactants and products are in equal concentrations. c. the forward reaction has gone further than the reverse reaction. d. there are equal numbers of atoms on both sides of the equation. e. a, b, and d are correct.