Can someone please help

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

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false

As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.