What gas inflates the air bags on a car?
The gas that inflates the airbags in a car is nitrogen. Nitrogen is an inert gas that is abundant in the atmosphere, making it relatively easy to obtain and use. Nitrogen is also non-flammable, so it is safe to use in a car. When an airbag inflates, nitrogen is released from a cartridge and quickly fills the airbag. This rapid inflation helps to protect passengers from injury in a car crash.