HELP PLEASE 5 STARS & THANKS

Both 1,2−dihydronaphthalene and 1,4−dihydronaphthalene may be selectively hydrogenated to 1,2,3,4−tetrahydronaphthalene. one of these isomers has a heat of hydrogenation of 101 kj/mol (24.1 kcal/mol), and the heat of hydrogenation of the other is 113 kj/mol (27.1 kcal/mol). match the heat of hydrogenation with the appropriate dihydronaphthalene.

In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust

Explain what happens at the saturation point when adding salt to water at room temperature.