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Why Does Helium Have 92% of the Lifting Power of Hydrogen if It Has Twice the Density?
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Abstract
The answer to the question "Why Does Helium Have 92% of the Lifting Power of Hydrogen if It Has Twice the Density?" is discussed.
Keywords (Audience):
High School / Introductory ChemistryKeywords (Subject):
HydrogenCiting Articles
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This article has been cited by 2 ACS Journal articles (2 most recent appear below).
Why Does a Helium-Filled Balloon "Rise"?
Richard W. RametteJournal of Chemical Education2003 80 (10), 1149Why Does a Helium-Filled Balloon "Rise"?
Richard W. RametteJournal of Chemical Education2003 80 (10), 1149The article is a lighthearted, conversational exploration of the microscopic basis for Archimedes’principle. The principle is discussed in terms of molecular collisions and density gradients in a gravitational field.
Unknown Gases: Student-Designed Experiments in the Introductory Laboratory
John Hanson and Tim HoytJournal of Chemical Education2002 79 (7), 845Unknown Gases: Student-Designed Experiments in the Introductory Laboratory
John Hanson and Tim HoytJournal of Chemical Education2002 79 (7), 845Introductory students design and carry-out experimental procedures to determine the identity of three unknown gases from a list of eight possibilities: air, nitrogen, oxygen, argon, carbon dioxide, helium, methane, and hydrogen. Although this is initially ...
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- Received: August 03, 2009
ACS
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