How many moles of naf are in 34.2 grams of a 45.5% by mass naf solution?

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

Which item is most likely part of the safety contract

How many grams of iron can be made from 16.5 grams of fe2o3