Helium is not only very light, it is also monatomic, it's particles are all made up of a single atom. Air molecules, oxygen, and nitrogen mainly are larger and hevier and diffuse through much more slowly.
Last longer than what? Helium balloons are not especially long-lived because diffusion is related to particle mass (lighter particles diffuse faster), and helium is the second-lightest possible gas.
Helium balloons do last longer than hydrogen balloons, because hydrogen is the lightest possible gas.
CO2 (Carbon Dioxide) is a larger molecule than H2 (Hydrogen) and because of this leaks out slower.
Or at least, that's what should happen in theory. But actual experimental evidence shows the opposite.
Although Hydrogen is one on the element scale, Helium is a preferred gas to use in balloons because it is a safer (not flammable) gas than hydrogen.
Mylar balloons are less porous to helium than are latex balloons.
Mylar-foil balloons are less porous to helium than latex balloons. Basically, it takes helium longer to seep through the Mylar-foil.
mylar balloons vs latex balloons
They are less porous
It's due to static electricity build up. The balloons have become charged with electricity and it is the same charge on both balloons (either positive or negative). Opposite charges attract, identical charges repel each other.
Distinguish between hypotheses that explain biodiversity and these that explain the origin of life?
explain the misconception of blood
how god explain buried fossil
please explain
"Lighter than air." Think about it for a second.
Not much. While it's true that meteorologists do use balloons to send up weather probes, they tend to use gas balloons instead. It's simpler, cheaper and works better in their conditions.
Like (same) charges repel.
The hot air balloons air pressure is usually used to explain the principle of buoyancy.
Because it is heavy Duty
It's due to static electricity build up. The balloons have become charged with electricity and it is the same charge on both balloons (either positive or negative). Opposite charges attract, identical charges repel each other.
There a several things that could explain some UFOs. Secret military aircraft, anomalies in the atmosphere, weather balloons or somebody pulling a hoax. Most sightings have logical explainations. But there is a small percentage that can't be explained. This small percentage is what becomes a UFO.
Note from Sharpe99: Poptropica is a virtual kids website its like a school website cause its apart of Funbrain.com, teachers use this website mostly. Poptropica now has the Poptropica Store, where you can buy Costumes, Items such as the new Torch that sets your Poptropican on FIRE!!!!!!!!!!! And what The Poptropica Blog said, there will be Balloons soon but now they DO have balloons! You can play islands, play multiplayer games in the main street hangouts on EVERY island, Poptropica came to public about September 2007 its VERY entertaining its for ages 5-6 to 15.http:/www.poptropica.com
The Soul is immortal, it is a universal power, it is the spirit, it is the Atman - it is everywhere. The Soul doesn't go through the cycle of death and rebirth because the Soul never dies. The Soul is immortal. It is like air in a balloon.. with air in the room that you live in, how many balloons can you blow? You can blow one balloon and burst it. You can blow a hundred balloons and burst them. You can blow a million balloons or a billion balloons...air is everywhere and when the balloons burst, the air merges with the air that is everywhere. So does the Soul. The Soul is everywhere. The body dies, the one inside the body is the ME, the Mind and the Ego. It is the ME that goes into the cycle of birth and rebirth. This goes on, again and again till we realize the Truth and we are liberated, then there is no rebirth.
Explain RAM? Explain RAM?
explain
It is a matter of mass, weight, and density. A balloon filled with normal air will not rise. Air will rise in water, because it is less dense (bubbles). Helium on the other hand is lighter than air, so it too will rise when 'submerged' in it. The actual process is that the heavier air surrounding a helium-filled balloon will "displace it" and force it upward. Hydrogen is also less dense than air, but it is flammable. Helium is not flammable, has no smell or taste, and is not poisonous. So because it is the second lightest element, and the second most plentiful in the world (found in natural gas), it's a natural fit. ---- However, consider that while it may seem fun to have balloons that go up on a string, if they escape, then eventually they pop and it is likely that the burst rubber will fall into the sea. In the sea they are mistaken for food by turtles and escaped balloons cause much harm. Also being unreactive as an element and very light, most of the helium on earth has gone to the top of the atmosphere and escaped into space. The only helium we have is found as a byproduct of radioactive decay within the Earth. The element has very important uses in industry and science and wasting it on balloons is not a sensible thing to do. There is only a finite amount of helium available to us at any given time.