Hydrogen - a bit of chemistry series Traditional Cache
Darick: Seems like this spot is too wet for this container, time to let it go. Thanks for reporting the issue.
Hydrogen - a bit of chemistry series
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Quick park and grab in a small parking lot near Oak Park in Ralston... not quite the same as some others in the series, but should be a very easy one. You can park just a few feet from ground zero. There are often muggles about, so be aware of who may be watching before making the grab. Bring your own pen/pencil.
This is part of a series of caches all using the same container. The experiment continues... first, the container was proven to be waterproof as long as you replace the lid tightly (please do). Second, they seem to be holding up in the elements, at least for the short term. Next experiment is internal log construction... trying a more secure method of attaching the log to the lid to ensure quick and simple log extraction and to reduce maintenance issues. Let me know if you have any comments/annoyances with these containers.
************************* HYDROGEN *************************
Symbol: H
Discovery: Cavendish, 1766. Hydrogen was prepared for many years before it was recognized as a distinct element.
Word Origin: Greek: hydro, water; genes, forming Named by Lavoisier.
Properties: Hydrogen is the most abundant element in the universe. The heavier elements were made from hydrogen or from other elements that were made from hydrogen. Hydrogen is a colorless, odorless, combustible gas. Hydrogen gas is so light and diffusive that uncombined hydrogen can escape from the atmosphere. Hydrogen gas ordinarily is a mixture of two molecular forms, ortho- and para-hydrogen, which differ by the spins of their electrons and nuclei. Normal hydrogen at room temperature consists of 25% of the para form and 75% of the ortho form. The ortho form cannot be prepared in the pure state. Since the two forms of hydrogen differ in energy, their physical properties also differ.
Uses: Hydrogen is important in the proton-proton reaction and carbon-nitrogen cycle. Liquid hydrogen is used in cryogenics and in the study of superconductivity. Great quantities are used for the fixation of nitrogen from the air in the Haber ammonia process. Hydrogen is use in welding, for the hydrogenation of fats and oils, in methanol production, in hydrodealkylation, hydrocracking, and hydrodesulfurization. Other applications include producing rocket fuel, filling balloons, making fuel cells, producing hydrochloric acid, and reducing metallic ores. Deuterium is used as a moderator to slow down neutrons and as a tracer. Tritium is used in the production of the hydrogen (fusion) bomb. Tritium is also used in making luminous paints and as a tracer.
Sources: Hydrogen occurs in the free state in volcanic gases and some natural gases. Hydrogen is prepared by steam on heated carbon, decomposition of certain hydrocarbons with heat, action of sodium or potassium hydroxide on aluminum electrolysis of water, or displacement from acids by certain metals.
Other Hydrogen Facts: While about 75% of the universe's elemental mass is hydrogen, hydrogen is relatively rare on Earth. The most common isotope of hydrogen is protium, which has one proton, but no neutrons. Hydrogen gas is extremely flammable. It was associated with the famous explosion of the Hindenburg airship and is used as a fuel by the space shuttle main engine.
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