If you start with 4.3 moles of NH3, how many moles of NANH2 can be produced

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

Iknow #2 is d. i just need to know why

Drug abuse will not lead to physical and psychological dependence. true or false ?