I don't know. Ask him:
Saturday, November 24, 2007
The 0' Factor
(C)Copyright 2007, C. Burke. All rights reserved.
Posted on 12/15/2010 5:23:20 PM PST by smokingfrog
For the first time in history, a change will be made to the atomic weights of some elements listed on the Periodic table of the chemical elements posted on walls of chemistry classrooms and on the inside covers of chemistry textbooks worldwide.
The new table, outlined in a report released this month, will express atomic weights of 10 elements - hydrogen, lithium, boron, carbon, nitrogen, oxygen, silicon, sulfur, chlorine and thallium - in a new manner that will reflect more accurately how these elements are found in nature.
"For more than a century and a half, many were taught to use standard atomic weights — a single value — found on the inside cover of chemistry textbooks and on the periodic table of the elements. As technology improved, we have discovered that the numbers on our chart are not as static as we have previously believed," says Dr. Michael Wieser, an associate professor at the University of Calgary, who serves as secretary of the International Union of Pure and Applied Chemistry's (IUPAC) Commission on Isotopic Abundances and Atomic Weights. This organization oversees the evaluation and dissemination of atomic-weight values.
Modern analytical techniques can measure the atomic weight of many elements precisely, and these small variations in an element's atomic weight are important in research and industry. For example, precise measurements of the abundances of isotopes of carbon can be used to determine purity and source of food, such as vanilla and honey. Isotopic measurements of nitrogen, chlorine and other elements are used for tracing pollutants in streams and groundwater. In sports doping investigations, performance-enhancing testosterone can be identified in the human body because the atomic weight of carbon in natural human testosterone is higher than that in pharmaceutical testosterone.
(Excerpt) Read more at eurekalert.org ...
Thanks. I was weighing some hydrogen the other day and noticed a discrepancy. Thought my scale might be off.
The AP store will make money because all chemistry students will have to download a new periodic table of the elements for their iPhones.
I was trying to explain to my nephew what makes an element an element.
I told him that it comes down to this: the proton number is the decider.
That is why H+ could be either a Hydrogen ion or a proton.
It is Hydrogen because it lost its electron and has only one proton, it is a proton because a proton is a proton.
For example, sulfur is commonly known to have a standard atomic weight of 32.065. However, its actual atomic weight can be anywhere between 32.059 and 32.076, depending on where the element is found.
So, what they’re saying is, the atomic weight of sulfir will STILL be “commonly known” as being pretty damned close to 32.065.
No, the atomic weight for sulfur still be “commonly known” 32 no one cares past that.
Or change the definition of the word “planet.”
Presumably the weights will remain the same. The tables can be changed, though.
I KNEW there was a reason not to pay attention the first time. Now that they’ve changed it, I can learn it fresh—with no preconceived ideas.
There is a method to my madness.
I don't know. Ask him:
“Zero was invented by the Islamic Arabs btw.”
The HECK it was. The only thing the Islamic Arabs invented was beheadings
The Zero was invented by South Indians. Aryabhatta, is generally considered the “Father of Place Value” but the Zero was probably in place well before it.
http://en.wikipedia.org/wiki/Place-value
No we don’t need Zero. We should impeach the Zero!
Is that why Zero keeps adding zeros to my tax bill?
Aww geeze.....
.....Is MO on an ATOMIC OBESITY crusade now too?
Also the value of pi will henceforth be 3.333.
Sure! I told that to my “Chem 300” Prof one time when he dinged a solution to a problem on one of his exams.
It was stll -10 when I walk out of his office. :>)
I know just enough about chemistry to be dangerous. Probably moreso to myself than others. :)
It’s like somebody got a new scale for Christmas and is now out to correct the world.
A major research institution (MRI) has recently announced the discovery of the heaviest chemical element yet known to science. The new element has been tentatively named Governmentium. Governmentium has 1 neutron, 12 assistant neutrons, 75 deputy neutrons, and 224 assistant deputy neutrons, giving it an atomic mass of 312. These 312 particles are held together by forces called morons, which are surrounded by vast quantities of lepton-like particles called peons. Since governmentium has no electrons, it is inert. However, it can be detected as it impedes every reaction with which it comes into contact. A minute amount of governmentium causes one reaction to take over four days to complete when it would normally take less than a second. Governmentium has a normal half-life of three years; it does not decay, but instead undergoes a reorganization in which a portion of the assistant neutrons and deputy neutrons exchange places. In fact, governmentium's mass will actually increase over time, since each reorganization will cause some morons to become neutrons, forming isodopes.
This characteristic of moron-promotion leads some scientists to speculate that governmentium is formed whenever morons reach a certain quantity in concentration. This hypothetical quantity is referred to as Critical Morass.
I guess we’ll now have a “living” Periodic Table...
In sports doping investigations, performance-enhancing testosterone can be identified in the human body because the atomic weight of carbon in natural human testosterone is higher than that in pharmaceutical testosterone.Thanks allmost for the ping! Before clicking in I thought this was going to be related to something else that was recently discovered, but it isn't! Thanks also to smokingfrog for the topic.
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