The density of an object is dependent of an object?

What happens when chlorine reacts with bromine? a. electrons move from the chlorine atoms to the bromine atoms. b. electrons move from the bromine atoms to the chlorine atoms. c. electrons are shared between the chlorine atoms and the bromine atoms. d. electrons become delocalized among the atoms.

The pressure proportional to the area a- inversely b- directly c- increase d-decrease

The built in flash in a compact camera is usally capable of giving correct exsposure for distance up to how many meters?