Scientist made the following two observations about emission spectra each element has a unique omission spectrum and Adams and energy only a specific wavelengths describe how the boar model explains both of these observations

"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."

i think it's c. i'm not sure but i think so.

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.