Your answer is 3 ( 1 calcium atom and 2 bromine atoms)
Answer:
Force is classified as a push or a pull
Explanation:

- P is power
- R is resistance

Hence


- Therefore if power is low then resistance will be high.
The first bulb has less power hence it has greater filament resistance.
The weight of air resting on a surface, divided by the area
of the surface ... described in units of force per unit area ...
is called air pressure.
The answer is 1.33 i hope this helps you