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The porosity of aluminium is very low compared to the porosity of rubber.
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Why do gases diffuse rapidly while liquids diffuse slowly?
The atomic bonds of gas particles are much weaker than that of liquids, allowing them to diffuse faster
Which is an example of gas effusion?
One example of gas effusion is the release of a gas through a small hole in a container, such as when air slowly escapes from a balloon. Another example would be the diffusion of gas molecules through a porous membrane, like the way oxygen and carbon dioxide diffuse in and out of our lungs during respiration.
Why are airplanes made from aluminium alloys?
Because aluminum alloys are very light without sacrificing much strength and oxidize very slowly.
Why aluminum can't behave in the same manner as powdered aluminum?
If you're talking about burning, then no. Powdered aluminum has an extremely high surface area, and oxidizes very quickly. An aluminum can does not nearly the same amount of surface area, and oxidizes much more slowly, so it won't burn readily.
Why should you not wash alum crystals in water?
Alum crystals are made of aluminum potassium sulfate, and are usually made by slowly dehydrating an aqueous solution of aluminum potassium sulfate. So, when you put water back onto a dried crystal, you will begin to dissolve it again.
Why do gases diffuse rapidly while liquids diffuse slowly?
The atomic bonds of gas particles are much weaker than that of liquids, allowing them to diffuse faster
An unknown gas is found to diffuse through a porous membrane 2.92 times more slowly than rm H 2.?
17.2 amu
Why does air seep out of balloons when there are no holes in it?
All gases will diffuse through rubber to a certain extent. The difference in pressure for the helium between the inside and outside is 1 atmosphere and so it diffuses out. Note that the difference in pressure for the air between the outside and inside is also 1 atmosphere and so the air diffuses in. You can buy high quality balloons so that this does not happen as rapidly.
What describes the properties of solids liquids and gases in terms of the motion of particles?
Solid - Particles vibrate and rotate about a fixed position and do not diffuse measurably Liquid - Particles move freely in all directions slowly and diffuse slowly Gas - Particles move freely in all directions rapidly and diffuse rapidly
True or false Gases with high molecular weights diffuse more slowly than gases with lower molecular weights?
Smaller molecules diffuse readily.
Why does aluminum react slowly even though it is a very reactive metal?
Aluminum is very reactive but it appears to react slowly because first it reacts with air which makes a thin coating of aluminum oxide which has to wear away before there will be any visiual reaction.
Which light metal is slowly replacing aluminum in aerospace industry?
Titanium
Which is an example of gas effusion?
One example of gas effusion is the release of a gas through a small hole in a container, such as when air slowly escapes from a balloon. Another example would be the diffusion of gas molecules through a porous membrane, like the way oxygen and carbon dioxide diffuse in and out of our lungs during respiration.
What effect does the aluminum foil have when it is placed between the candle wax and the wick?
the wick burns more slowly
Why does glucose diffuse into your blood more slowly when your muscles are working?
because when we work more enery is released and thats the reason for gulcose to dislove faster in the body .
Why do you have to wear rubber bands if you have braces?
The rubber bands apply pressure on the teeth to help them slowly move to the desired position they should be in. I hated those bands when I was a kid too ;)
Does the aluminum compound in deodorant cause Alzheimer's Disease?
No, it does not. The reasons Alzheimer's patients have higher levels of aluminum is because the cells affected are less able to rid themselves of toxins (like aluminum) that build up. It is not because aluminum compounds, slowly accumulating over time, damage the cells. If the aluminum compounds somehow soaked in through the skin and damaged the brain, you would see an abnormally high amount of Alzheimer's disease affecting populations of people who worked with aluminum as part of their daily life (like chefs, airplane mechanics, aluminum siding salesmen, etc.) - which isn't the case.
