Which gas would readily flow underground if it was released
If a gas was released underground, it would readily flow based on its properties, specifically its density and solubility in soil or water. Some gases that would likely readily flow underground include:
1. Natural Gas: Composed primarily of methane, natural gas is a lightweight gas that can easily and rapidly flow through underground rock formations and permeable soils.
2. Carbon Dioxide: Although slightly heavier than air, carbon dioxide can still flow through underground spaces and be transported by pressure differentials or natural forces.
3. Methane: Similar to natural gas, methane is a lighter-than-air gas that can easily migrate through underground rock layers and permeable soils.
4. Hydrogen: A very lightweight gas, hydrogen would quickly rise and flow through underground spaces without much resistance.
5. Radon: A naturally occurring radioactive gas, radon is chemically inert, which allows it to easily flow through rock formations and soil.
It is important to note that the specific characteristics and behavior of a gas depend on various factors, such as its density, solubility, pressure, and the porousness of the soil or rocks it encounters. Therefore, the flow and behavior of a released gas underground can vary depending on the specific conditions and context.