How to find out how many neutrons an isotope has

If the root word engage means “to connect with something,” what does the word disengage mean in the following sentence? he disengaged the gears by stepping on the clutch pedal.a.added more engine powerb.activated a connection to the pedalc.stalled the engined.released a connection to the pedal

Building glycogen from glucose molecules is an example of

Adilute aqueous potassium nitrate solution is