If a copper penny weighing 3.045 g is dissolved in a small amount a
of nitric acid and the resultant solution is diluted to 50.0 mL with
water, what is the molarity of the Cu(NO3)2?

3

explanation:

"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."