In a wave, what happens to a molecule after it passes energy on to the next molecule in the chain? O It continues moving
O It vibrates rapidly from the buildup of energy
O It becomes completely still
It returns to its original resting position

answer: option (a) is the correct answer.

explanation:

the measurement of hydrogen ions in a solution is known as ph.

if ph of a solution is less than 7 then the solution is acidic. if ph of a solution is greater than 7 then the solution is basic.

when the ph of a solution equals 7, then the solution is considered as neutral.

the ph of pure water is 7, therefore, it means that concentration of hydronium ions equals that of hydroxide ions.