Answer:
Unlike other extinguishing agents - water, dry chemical, CO2, etc., a stable aqueous foam can extinguish a flammable or combustible liquid fire by the combined mechanisms of cooling, separating the flame/ignition source from the product surface, suppressing vapors and smothering. It can also secure for extended periods of time against reflash or reignition. Water, if used on a standard hydrocarbon fuel, is heavier than most of those liquids and if applied directly to the fuel surface, will sink to the bottom having little or no effect on extinguishment or vapor suppression. If the liquid fuel heats above 212ºF, the water may boil below the fuel surface throwing the fuel out of the contained area and spreading the fire. For this reason, foam is the primary fire-extinguishing agent for all potential hazards or areas where flammable liquids are transported, processed, stored or used as an energy source.
this is what I found, hope it helps
In contrast to other extinguishing agents such as water, dry chemical, CO2, and so on, a stable aqueous foam can extinguish a flammable or combustible liquid fire through a combination of cooling, separating the flame source from the product surface, suppressing vapors, and smothering.
What is solubility ?The term solubility is defined as the maximum amount of a substance that will dissolve in a given amount of solvent at a specified temperature.
It can also protect against ref lash or reignition for extended periods of time. Water is heavier than most liquids when used on a standard hydrocarbon fuel and will sink to the bottom if applied directly to the fuel surface, having little or no effect on extinguishment or vapor suppression.
If the liquid fuel heats above 212°F, water may boil beneath the fuel surface, releasing the fuel and spreading the fire.
Thus, dry chemical, CO2, and so on, a stable aqueous foam can extinguish a flammable or combustible liquid fire through a combination of cooling.
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what do liquid methane and liquid water have in common
Answer:
methane on the other hand is made of one carbon atom and 4 hydrogen atoms. like water, the bonds are covalent.
Liquid methane and Liquid water are both covalent compounds, thus, they both have covalent bonds in common.
What is methane?Methane is a covalent compound which exists as a gas at room temperature.
Methane is composed of four hydrogen atoms and a carbon atom linked together by covalent bonds.
What is water?Water is a covalent compound which exists as a liquid at room temperature.
Water is composed of two atoms of hydrogen and one atom of oxygen linked together by covalent bonds.
What do liquid methane and Liquid water have in common?Since both liquid water and liquid methane are covalent compounds, they both have covalent bonds in common.
Therefore, liquid methane and liquid water have covalent bonds in common.
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