9 A coefficient should always be added to balance an equation.
A to lower right of a chemical symbol.
B immediately before whatever element needs to be balanced.
C only at the beginning of a chemical formula.
D none of the above.

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

If you burn 10 kilograms of wood in a fire (combustion) what is the weight of the products after the fire has finished burning the wood?

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.