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Is it always true that the molecules of dense liquid are heavier than the molecules of lighter molecules?
NO. Water has a density greater than gasoline, but gasoline, octane anyway, has a greater molecular mass than water molecules.
Is burning gasoline in an engine an example of chemical change?
Yes, burning gasoline in an engine is an example of a chemical change. During combustion, gasoline molecules react with oxygen to produce new substances such as carbon dioxide, water vapor, and heat energy. This chemical reaction alters the composition of the gasoline molecules, resulting in a different set of products.
How many molecules of oxygen are needed to burn one molecule of fuel?
That depends on the fuel. Natural gas, methane, needs 2 molecules of oxygen, but gasoline, octane, needs 17 molecules of oxygen.
Why is hexane soluble in water and gasoline is not?
Hexane is soluble in water due to its ability to form hydrogen bonds with water molecules. Gasoline is not soluble in water because it is nonpolar and water is polar, causing them to repel each other. Gasoline is also not soluble in water because the two substances have very different molecular structures and cannot form a homogenous mixture.
Is gasoline miscible with water?
Water is not soluble in gasoline. Water is made up of very polar molecules while gasoline is made up of a collection of different nonpolar hydrocarbon molecules. They cannot interact through the same intermolecular forces and therefore they cannot dissolve each other. The above answer is correct, however even insoluble things will dissolve to a certain extent. Gasoline will dissolve about .1% water, or 1 ml per liter (about 3/4 of a teaspoon per gallon). Gasoline containing ethanol will dissolve about 1% water.
Is gasoline hydrophobic?
Yes, gasoline is considered hydrophobic because it does not mix with water. This is due to the non-polar nature of gasoline molecules, which causes them to repel water molecules.
Is it always true that the molecules of dense liquid are heavier than the molecules of lighter molecules?
NO. Water has a density greater than gasoline, but gasoline, octane anyway, has a greater molecular mass than water molecules.
Gasoline is not solubal in water because gasoline is?
Gasoline is hydrophobic because the molecules are non-polar. Only polar molecules are soluble in water.
Why does gasoline interfere with the hydrogen bonding between ethanol molecules?
Possible because gasoline is nonpolar.
Why does water weigh more then gasoline?
Water weighs more than gasoline because the particles in water are more dense than those in gasoline. This is because water molecules are highly polar and tend to attract each other. Gasoline molecules are not nearly as polar and do not attract each other.
Why salt is insoluble in gasoline?
Salt is insoluble in gasoline because of their composition. Gasoline has molecules that are nonpolar meaning electrons share the same charge. On the other hand, salt is polar because its molecules having uneven charges. This would cause the salt to dissolve.
Is Gasoline Large Molecule Lighter than air?
Gasoline is a mixtures so the is not particular molecules that can be identified as gasoline. But most of the components are denser than air even in the vapor phase.
How do they make gasoline?
Gasoline is primarily produced from crude oil.Crude oil is a mixture of hydrocarbons with different molecular weights, formulae, boiling points, contaminants and other physical constants. Gasoline is a hydrocarbon mixture with a much more limited range of these components which is formulated to burn in internal combustion engines.The Process:Incoming crude is cleaned up by removing water and solids.Initially the gasoline sized molecules re removed from the crude oil by distillation. This is a small portion of the crude.The molecules too small to be gasoline are recovered and reformed to make bigger molecules. This reformate is redistilled to recover more gasoline sized molecules. Lighter molecules are added to the crude light ends going to the reformer for another trip through.Heavy molecules from the crude and heavy molecules from the reformer are set to a "Cracker" to be broken up into smaller molecules. This cracked oil is distilled. Gasoline sized molecules are recovered, light ends are reformed and heavy ends are re-cracked.The collected gasolines is purified to remove sulphur and other contaminants, adjusted with other thypes of hydrocarbon molecules to produce a clean burning fuel. Additive packages are mixed in (anti-knock compounds, detergents, antioxidants etc.)
Does a sugar molecule have a polar bond to a gasoline molecule?
No, a sugar molecule does not have a polar bond to a gasoline molecule. Sugar molecules mostly contain polar hydroxyl groups, while gasoline molecules are nonpolar hydrocarbons. Therefore, they do not form polar bonds with each other.
Is burning gasoline in an engine an example of chemical change?
Yes, burning gasoline in an engine is an example of a chemical change. During combustion, gasoline molecules react with oxygen to produce new substances such as carbon dioxide, water vapor, and heat energy. This chemical reaction alters the composition of the gasoline molecules, resulting in a different set of products.
When filling your gas tank to the top and parking your car where it is exposed to the hot sun why does the gasoline overflow?
Gasoline overflow due to heatexpansion. the molecules move faster.
Gasoline and cooking oil are not amphipathic molecules why?
They do not have polar or charged regions.
