Air bags, which act as safety devices in cars, contain solid sodium azide. On impact, the sodium azide releases

nitrogen gas, which expands the air bag. The main benefit of using a gas instead of another type is that -

A. gas molecules are subject to ionic bonding

B. the separation of gas molecules is much greater than the volume they occupy

C. gases won't explode the bag on very hot days

D. gas molecules don't transfer excess Kinetic Energy

Question

Chemistry

Kiara Bryant

23 March, 09:36

Air bags, which act as safety devices in cars, contain solid sodium azide. On impact, the sodium azide releases

nitrogen gas, which expands the air bag. The main benefit of using a gas instead of another type is that -

A. gas molecules are subject to ionic bonding

B. the separation of gas molecules is much greater than the volume they occupy

C. gases won't explode the bag on very hot days

D. gas molecules don't transfer excess Kinetic Energy

+5

Answers (1)

Know the Answer?

Chad Hobbs · Answer 1

The answer is; D

The reason for this is because gases are compressible. Much of the energy of the impact created when your head hits the air bad is absorbed by the gas (through compression and rarefaction) hence reducing the damage to the head in case of an accident.