Which pair of atoms has the highest electronegativity difference? na-f ca-f h-f c-f f-f

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.

What is the mass of 0.46 mol of mgcl2

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