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Lighter than air

en.wikipedia.org/wiki/Lighter_than_air

Hydrogen (density 0.090 g/L at STP, average molecular mass ... hydrogen, they are both so much lighter than air that this ...

Is hydrogen gas lighter or heavier than air? | Yahoo Answers

answers.yahoo.com/question/index?qid=20101111024212AAvE62L

Nov 11, 2010 ... In short hydrogen is the lightest thing known to man and therefore considerably lighter than air. In your experiment the flammable hydrogen gas ...

density - What makes water heavier than air? - Physics Stack ...

physics.stackexchange.com/questions/103419/what-makes-water-heavier-than-air

Mar 14, 2014 ... Considering that hydrogen is lighter then oxygen, and water is 2/3 hydrogen, and only 1/3 oxygen, and our "air" is comprised mainly of oxygen, ...

Hydrogen/Oxygen Balloons - we relive the ... - Cool Science

www.coolscience.org/CoolScience/KidScientists/H2O2Balloons.htm

One balloon contained oxygen gas (O2), which is more dense than air. ... Second , hydrogen gas is combustible, that is, when a flame or spark is applied, it will ...

Why are gases like Hydrogen and helium rarely found in the earth's ...

www.quora.com/Why-are-gases-like-Hydrogen-and-helium-rarely-found-in-the-earths-atmosphere-whereas-heavier-gases-like-Nitrogen-and-Oxygen-found-in-abundance

Jan 9, 2013 ... Why are gases like Hydrogen and helium rarely found in the earth's atmosphere whereas heavier gases like Nitrogen and Oxygen found in ...

Density of Gases - Chemistry Department - Elmhurst College

chemistry.elmhurst.edu/vchembook/123Adensitygas.html

Hydrogen balloon: Compare the densities of hydrogen, helium, and air to predict ... As the oxygen in the air is pushed out of the beaker by the denser carbon ...

Explosive Reaction of Hydrogen and Oxygen Using Balloons ...

cldfacility.rutgers.edu/content/explosive-reaction-hydrogen-and-oxygen-using-balloons

Illustrates the properties of lighter than air gases and mixtures, and provides an ... When ignited, hydrogen gas combines with oxygen gas explosively in ...

science buzz: If CO2 is so heavy, why doesn't it sink and suffocate us?

colinb-sciencebuzz.blogspot.com/2010/01/if-co2-is-so-heavy-why-doesnt-it-sink.html

Jan 12, 2010 ... The relative densities of hydrogen :nitrogen: oxygen: air::carbon dioxide are approximately 1 : 7 : 8 : 7.2 : 22. Gases lighter than air rise, those ...

Lifting Power of Helium and Hydrogen and Rigid Airship Operations

www.airships.net/helium-hydrogen-airships

The two primary lifting gases used by airships have been hydrogen and helium. ... each gas is so much lighter than air helium provides about 93% of hydrogen's lift at full purity. .... The flammable gas is the mixture of hydrogen and oxygen.

Graham's Law of Effusion

group.chem.iastate.edu/Greenbowe/sections/projectfolder/GrahamsLaw.htm

Compare the relative rate of effusion of hydrogen gas to oxygen gas. ... Hydrogen gas is lighter than oxygen gas therefore we should expect H2 to effuse at a ...

More Info

Is oxygen heavier or lighter than Hydrogen Gas - Answers.com

www.answers.com

Hydrogen is lighter than Oxygen.This is a very simple question. Hydrogen is the first element on the periodic table of elements and it weighs 0.08988.

hydrogen - Why do we use helium in balloons? - Chemistry Stack ...

chemistry.stackexchange.com

Sep 8, 2014 ... If hydrogen is lighter than helium, why do we insist on using helium in balloons? ... Air, meanwhile, is mostly oxygen and nitrogen: oxygen has a ...

We Would Like to Know if Oxygen is Lighter or Heavier than Air

scienceline.ucsb.edu

Air is roughly 78% Nitrogen and 21% Oxygen. The remaining 1% composed of Argon, Neon, Carbon Dioxide, Helium, Methane, Krypton, and Hydrogen.