Argon

chose Neon because of it's uniqueness. In 1898, William Ramsay and Morris Travers at University College London isolated krypton gas by evaporating liquid argon. They had been expecting to find a lighter gas which would fit a niche above argon in the periodic table of the elements. They then repeated their experiment, that time allowing solid argon to evaporate at a slow pace under reduced pressure and collected the gas which came off first. This time they were quite successful, and when they put…

The noble gases are the group of elements which are like no other elements. The noble gases are the elements grouped as the last group, group 18. These elements, from smallest to greatest atomic mass, are Helium, Neon, Argon, Krypton, Xenon, and Radon. Group 18 wasn't always called the noble gases. this group used to be called the inert gassses. They changed the name of thisi group because they are not always inert, or chemically inactive. the first element in this group is the element…

What’s the science behind light? A lightbulb is “a glass bulb inserted into a lamp or a socket in a ceiling, that provides light by passing an electric current through a filament or a pocket of inert gas.” ("Light Bulb - Definition of Light Bulb in English | Oxford Dictionaries") Light is a form of energy emitted by an atom. Light is made up of many light photons, which are small particles that have energy and momentum but no mass. Atoms release photons when the electrons become “excited” and…

was purchased from Frontier Scientific. Acetonitrile (MeCN), dichloromethane (DCM), 1,4-dioxane, and other organic solvents used were spectroscopic grade. These solvents were distilled from appropriate drying agents under argon just prior to use. Water, Milli-Q grade, and argon of high purity were used. - Instruments Cyclic voltammetry (CV) measurements were carried out with a TEQ 03 potentiostat. For voltammetry in non-aqueous or organic solvent media (DCM or AcCN) a three-electrode system was…

Major Questions in Paleoanthropology: The First Art Three articles by Aubert, Joordens, and Vidal all display the beginnings of art which come from all over the world including Siberia, North Africa, South Africa, and Australia. The time period in which we have evidence of this art is called the Upper Paleolithic, which is considered to be what is commonly called “The Stone Age”. These articles describe early art as simple geometric engravings, paintings, stencils, and even portable stone…

Studying human remains dating back more than 5,000 years ago is typically quite difficult. Although Otzi’s, also known as “iceman”, remains are over 5,000 years old, archaeologists are able to perform an autopsy him due to to the fact he was frozen in ice. When Otzi died he had fallen down the Italian Alps landing him in an advancing glacier. The glacier had preserved his body in ice so well that archaeologists were able to extract DNA, pollen, and tissue samples to find out about his origin,…

Chlorine is an element that consists of 17 protons, an average of 18.5 neutrons and 17 electrons. It has an atomic number of 17, and an average nuclear charge of 35.5. There are 2 isotopes of chlorine that are 35Cl and 37Cl. 35Cl has an atomic mass of 35 and a natural abundance of 75%. 37Cl has an atomic mass of 37 and a natural abundance of 25%. The average atomic mass or nuclear charge equates to 35.5. Both of the isotopes have the same atomic number. (BBC Bitesize. Atoms and the periodic…

For the past two decades, more research efforts have been focused on the development of Advanced High Strength Steels (AHSS). The AHSS include Dual Phase (DP) steels, [1–10], High Strength Low Alloy steels (HSLA), Transformation Induced Plasticity (TRIP) steels, Twinning Induced Plasticity (TWIP) steels, and medium manganese steels, (Bouaziz et al., 2013). The majority of the research are focused on the development of third generation of steels due to interest in the mechanical properties of…

are many components that make up the atmosphere, the main components is nitrogen, which makes up 78.09% of the atmosphere, and oxygen, which makes up 20.95%. Around 1% of the atmosphere is comprised of water vapour, methane, carbon dioxide, sulphur, argon and particulates (e.g. dust). There are a total of four layers to the atmosphere, the troposphere, the stratosphere, the mesosphere and the thermosphere. The Troposphere The first, and lowest, layer of the atmosphere is the troposphere. The…

Energy performance of the original house is not terribly bad but not satisfied, either. It wastes a huge amount of energy in cooling the living area. Strategies of achieving better passive heating and cooling will be illustrated as following. Reducing cooling energy consumption will be emphasized in designing the new house. The original orientation (315 degrees with living room faces south-west) resulted in excessive heat gain during summer, especially in the afternoon, and insufficient heat…