Carbon is often found in long chains composed of carbon and

a) calcium
b) sodium
c) hydrogen
d) fluorine

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.

How is the shape of the poem “peer” connected to its meaning?

What is the work done by the electric force to move a 1 c charge from a to b?