assign an oxidation number to each element in the reaction.

co(g) + 2h2(g) → ch3oh(g)

1.
in co, the oxidation number of c is

2.
and that of o is
a.
+2
b.
-2

"hydrogen bonding is the attraction of h atoms in the water molecule (slight + charge) to o atoms in a neighboring water molecule (slight - charge); it is a weak interatomic force. but it is still strong enough to the water molecules "stick" together."

6.4 cm (max) - 25 cm (min)