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Letting gas out of a cylinder always causes a cooling. This is the Joule-Thomson effect. As the gas expands work is done against the interatomic/molecular attractions (dispersion forces for helium).
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Why do you have to hang onto your helium balloon?
If you let go of your helium balloon it will start to rise because helium is lighter than air.
Why does a helium balloon float into the sky when you let go?
Helium is lighter than air, therefore it rises upwards.
Is helium is filled in balloons?
because helium weighs 4u and air (80% nitrogen) weighs about 14u. because helium has less mass, it has less gravity and rises. it has also to be a gas as a substance in a gas form has a much lower density as a liquid or solid form. earlier they used hydrogen (1u), but that is highly explosive. (u is relative mass for atoms)
Why are most of the planets made of helium?
because so many kids have let go of their helium balloons , so the plantes just sucked in the helium from the balloons and that's why most of the plantes are made of helim :)
What happens when we let all of the Earth's helium float off into space?
If we let all of Earth's helium float off into space, we will not be able to replace it. Helium is a very important resource because it can be cooled to very low temperatures and exist as a liquid. It's used in MRI machines to cool the superconducting magnets, for instance. When used for cryogenic purposes, it's allowed to boil off into the atmosphere, where it floats up into space and is lost forever.
Why do you have to hang onto your helium balloon?
If you let go of your helium balloon it will start to rise because helium is lighter than air.
Is it bad to let helium into your atmosphere?
Nope.
Why can gases such as helium escape the earth's atmosphere?
because earth has gas particles that can let helium go
What goes up when you let go of it?
More than likely a Helium filled balloon. A Hydrogen filled balloon is very flammable and might burst into flames similar to the Hindenburg blimp/dirigible. Helium is not flammable.
Why does a helium balloon float into the sky when you let go?
Helium is lighter than air, therefore it rises upwards.
What keeps foods colder plastic wrap or aluminum foil?
aluminium foil keeps food colder because it doesn't let air in.
Is helium is filled in balloons?
because helium weighs 4u and air (80% nitrogen) weighs about 14u. because helium has less mass, it has less gravity and rises. it has also to be a gas as a substance in a gas form has a much lower density as a liquid or solid form. earlier they used hydrogen (1u), but that is highly explosive. (u is relative mass for atoms)
Why does a balloon filled with helium rise with a balloon filled with an equal volume of average atmospheric air does not?
Helium is less dense than air, which is why the helium-filled balloon floats when you let it go.
Why are most of the planets made of helium?
because so many kids have let go of their helium balloons , so the plantes just sucked in the helium from the balloons and that's why most of the plantes are made of helim :)
Can inhaling helium give you a headache?
Yes, the helium doesn't let oxygen get through to your brain and can definitly make you feel light headed an dizzy.
Will Hot water tank freezing?
If the hot water tank is off it is possible. It is also possible for the cold water going to the hot water tank to freeze. Insulate all pipes that are exposed - or let them drip (this is more expensive!)
How do you get bondo smell out of car?
Let bondo air out, colder weather will make it take longer.
