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An Olympic baseball team too old for gold?
By Bob Klapisch
The (Hackensack, N.J.) Record
Without any realistic way to pry Ken Griffey Jr. or Randy Johnson or Mark McGwire from the big leagues' pennant races, the United States will be represented by a handful of amateurs and Class AAA prospects — which in itself is no crime. These kids deserve the thrill of international competition, and will certainly benefit from it.
But what's so troubling is that Lasorda and former Yankees g ...
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An Olympic baseball team too old for gold?
By Bob Klapisch
The (Hackensack, N.J.) Record
Without any realistic way to pry Ken Griffey Jr. or Randy Johnson or Mark McGwire from the big leagues' pennant races, the United States will be represented by a handful of amateurs and Class AAA prospects — which in itself is no crime. These kids deserve the thrill of international competition, and will certainly benefit from it.
But what's so troubling is that Lasorda and former Yankees g ...
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Search | Index | Home | Glossary | Contact Us
CONTENTS
Highlights
What is lead?
What happens to lead when it enters the environment?
How might I be exposed to lead?
How can lead affect my health?
How likely is lead to cause cancer?
How does lead affect children?
How can families reduce the risk of exposure to lead?
Is there a medical test to show whether I've been exposed to lead?
Has the federal government made recommendations to protect human health?
References
Co ...
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Chemical & Engineering News
January 12, 1998
Copyright © 1998 by the American Chemical Society
Rebeccca L. Rawls
C&EN Washington
The past 75 years have been some of the richest ever for the discovery of new elements. Since C&EN began publication in 1923, 26 elements have been added to the periodic table. On average, that's about one new element every three years.
The era spans a major change in the kind of elements being discovered. Hafnium (discovered in 1923) and rhenium ( ...
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WebElements home
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E007
The Masurium File: An X-Ray Mystery. David H. Templeton, Department of Chemistry, University of California, Berkeley, CA 94720-1460.
Walter Noddack, Ida Tacke and Otto Berg [1] reported the discovery of masurium and rhenium, elements 43 and 75, on the basis of weak lines in X-ray spectra excited by electron impact on fractions extracted from niobium and platinum ores. Some or all of these ores contained uranium. Further work produced larger amounts of Re, and it became an item of commerce ...
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home
John L. Konefes and Michael K. McGee
Old Cemeteries, Arsenic, and Health Safety
[click Water Industry News, Water Facts when you arrive]
Embalming human remains for burial has taken a long road to its present state as an art that now minimizes health and environmental concerns of burials. Along the way, health and safety were not always considerations. From the Civil War until about 1910, arsenic was the main ingredient in the embalming fluids used widely throughout the country. Altho ...
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High School Hub is now High School Ace.
Please update your links!
http://HighSchoolAce.com
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Search:
Important Notice
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The Doormouse said "Name everything that begins with 'M'."
Help me name everything that begins with mercury...
Adhesives
Ageing
Agricultural chemicals
S T O P !
I need a new page, here is the LIST
Accumulative low dose mercury poisoning measured in 'parts per million'.
First named by Alfred Stock.
The slow chronic accumulation of mercury morphs living cells and micro-organisms surf in its wake. Carcinogen ...
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Osmium
Isotope Natural
abundance
(atom %)Isotopic
enrichment
(atom %)
Os-1840.0185.45
Os-1861.59>61
Os-1871.64>70
Os-18813.3>94
Os-18916.1>94
Os-19026.4>95
Os-19241.0>99
PRODUCT FORM
Inventory Form:metal
Alternate Form:oxide
Note:
Other isotopic abundances, chemical forms, and/or targets considered on request.
ContactOak Ridge National Laboratory
Isotope Business Office
Call: (865) 574-6984
Fax: (865) 574-6986
email: isotopes@ornl.gov
s_os - Rev:07-Sep-2004
Copyright © 1996-2004 Oak Ridge National Laboratory. All rights reserved.
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Lanthanum
Symbol La
Atomic Number 57
Atomic Weight 138.9055
Oxidation States
Electronegativity, Pauling1.1
State at RT Solid, Metal
Melting Point, K 1194
Boiling Point, K 3730
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Liquid Nitrogen
Droplets of liquid
nitrogen on table top.
Exploding film can.
Mini-geyser
Shrinking balloon.
Bimetallic strip
Liquid nitrogen has a temperature of 77 K at standard atmospheric pressure. Being about one-fourth of room temperature, this is low enough to produce some interesting phenomena. Liquid nitrogen can be held for several hours in a vacuum flask.
Liquid nitrogen is cold enough to be below the superconducting transition of the high temperature superconductors like YBaCuO.
Click on any of the illustrations for further details.
Liquid nitrogen and superconductors
Index
Temperature concepts
HyperPhysics***** Thermodynamics R Nave
Go Back
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LUTETIUM
[General | States | Energies | Oxidation & Electrons]
[Appearance & Characteristics | Reactions | Other Forms]
[Radius | Conductivity | Abundance | History]
General
NameLutetium SymbolLu
Atomic number71 Atomic weight174.96
Density @ 293 K9.85 g/cm3 Atomic volume17.78 cm3/mol
GroupRare Earth, Lanthanides Discovered1907
Back to the top
States
State (s, l, g)s
Melting point1929.2 K Boiling point3600 K
Heat of fusion18.60 kJ/mol Heat of vaporization355.90 kJ/mol ...
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Questions & Comments
Berkeley Researchers Eliminate One Theory in Mystery of Missing Xenon, but Find New Clues About Element's Behavior
September 25, 1997
Scientists at Ernest Orlando Lawrence Berkeley National Laborat ...
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Ask A Scientist©
Physics Archive
Naming Elements
Question: How do you name elements and how are they identified?
Answer: Actually, this is more of a "chemistry" question... The elements
that occur naturally were all discovered a long time ago, so
the problem of naming them does not come up anymore - they already
have names. However, there are some official international organizations
(IUPAP/IUPAC I think?) that are responsible for establishing the names
used in scientific ...
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Xenon gas, Krypton gas, Neon gas, Deuterium, Helium-3 gas, VOC Gases, Excimer laser gases
Neon Gas Description
Neon gas is odorless, colorless, tasteless, nontoxic, monatomic and chemically inert. The concentration of Neon gas in the atmosphere, by volume percent, is 1.8 x 10-3. Neon gas is principally shipped and used in gaseous form for excimer lasers, plasma displays, light bulbs, neon signs and Research and Development laboratory research. Spectra Gases Material Safety Data Sheets (MSDS ...
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Chemistry: WebElements - The Periodic Table on the WWW: Home page
Pro HomeScholar HomeBooksShop for wall chartsChemdexChemputerNewsForumsWiki
WebElementsTM
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Notes
Please try one of these links and bookmark it:
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WebElements Scholar Edition home - http://www.webelements.com/webelements/scholar/ (for chemi ...
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NOTE: You need to be using a Java-enabled browser to view this applet
Element Information
Click on an element in the table to get information for that element. Data are displayed below the table.
Coloring by Numbers
Use the shading control to shade the table according to the values of the physical properties of the elements. The color scale indicates the colors assigned to the relative values of the property being displayed along with the maximum and minimum values. The actual colors an ...
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Periodic Table Memory Pegs
©John P. Pratt, all rights reserved
Icons drawn by David R. Pratt
16 September 1997
updated 2 Feb 2006 to show data better with mouse
Each picture in this periodic table is designed to remind you of the element's name, atomic number, and abbreviation. Point to the element to see its name and number. Click on the element for more explanation and then "Back" to return to the table. There is also an explanation of how to use the pictures as memory pegs. You can also ...
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1001-periodic-table-quiz-questions.com
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Information valid for Sr-88 unless otherwise notedStrontium
Basic Information
Symbol: Sr
Atomic Number: 38
Mass: 87.62
Melting Point: 769
Boiling Point: 1384
Number of Protons/Electrons: 38
Number of Neutrons: 50
Classification: Alkaline Earth
Crystal Structure: Cubic
Density: 2.54
Color: yellowish
Atomic Structure
Number of Energy Levels: 5
First Energy Level: 2
Second Energy Level: 8
Third Energy Level: 18
Fourth Energy Level: 8
Fifth Ene ...
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PersonalPageBrowser - Browsing User Pages
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The page you are attempting to view has not been found.
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Praseodymium
Atomic number59
Atomic weight140.90765
Discovery (year)1885
Atomic radius (A)1.83
Melting point (oC)@
Boiling point (oC)@
Density (g/cm3)6.47
Specific heat (cal/g oC)0.048
Ionization potential (eV)5.42
Electron Affinity (eV)@
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Praseodymium
Note: Resonance frequencies are quoted relative to a resonance
frequency of exactly 100 MHz for 1H.
Isotope: 141Pr
Spin: 5/2
Natural abunance: 100 %
Magnetogyric ratio (rad/T s):
Relative receptivity:
Magnetic moment
Quadrupole moment Q/m(2)
Resonance frequency 14.126 MHz
back to NMR Periodic table
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Structures, Physical Properties and Reactivities of Fullerenes
C60
UV/Visible spectrum of chromatographically purified C60
IR Spectrum of pure C60
NMR OF C60
Properties
Density 1.65 g cm-3
Standard heat of formation 9.08 k cal mol-1
Index of refraction 2.2 (600nm)
Boiling point Sublimes at 800K
Resistivity 1014 ohms m-1
Vapour density N/A
Crystal form Hexagonal cubic
Vapour pressure 5 × 10-6 torr at room temperature
8 × 10-4 torr at 800K
Organoleptic properties Ap ...
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Some Chemistry of Uranium
Year 12
September 1999
Occurrence
In sea water, at about 0.003 ppm.
In rocks of the earth's crust generally, at up to 4 ppm, and incorporated into many minerals.
In ore, as uraninite (UO2) or pitchblende (U3O8) or as secondary minerals (complex oxides, silicates, phosphates, vanadates).
Australian ores are up to O.5% U3O8, in Canada they range up to 20% U3O8.
U3O8 is a stable complex oxide: U2O5.UO3.
Uranium oxide precipitates from uranium ...
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Stony Brook Scientists
Trap Rarest Element with Lasers
Figure 1. False color image of francium atoms trapped with lasers. The central spot is about 1 mm in diameter. The other bright areas come from laser light scattered off of glass surfaces.
Click here to see a movie of the trap forming as the laser frequency is scanned (only for Java-enabled browsers).
STONY BROOK - A group of scientists from Stony Brook, the State University of New York, have succeeded for the first time to trap a ...
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The Periodic Table Challenge
Challenging Classic Version 2.2a
Novice mode: Show which ones are right and wrong.
Give me a random comment, hint or piece of trivia with my score.
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NEW!: You can also try the Easier Instant Version of this resource which scores each element as you type it and offers easier hints.
Instructions:
Click on a box and type in the 1 or 2 letter symbol for the element. You c ...
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Unit 4: Up Close: The Periodic Table of Elements
Section 2: Transition Metals
Introduction
Properties of Transition Metals
Some Transition Metals
Introduction
When you stare at the perodic table, you see nice whole columns of elements that are grouped together with similar properties. After group 1 and group 2, you see a big gap before you reach group 3. As you peer harder at this gap, you see elements in between group two and group three. These are the transition elements. In this sect ...
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Uranium Glass at the Glass Encyclopedia
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