Final answer:
Compressed gases can be hazardous due to the risk of explosions, asphyxiation, toxicity, and reactivity.
Step-by-step explanation:
Compressed gases can pose several hazards. One of the main hazards is the potential for explosions due to the high pressure of the gas. If the containment vessel fails or is mishandled, the rapid release of the compressed gas can cause an explosion. Another hazard is the risk of asphyxiation or suffocation. Some compressed gases, such as carbon dioxide or argon, can displace oxygen in an enclosed space and create an oxygen-deficient environment. In addition, certain compressed gases can be toxic or highly reactive, posing health risks or the potential for chemical reactions.