Platinum It's chemical properties. What is it used for? Platinum Symbol: Pt Atomic number: 78 Atomic mass: 195,084 Group 10 - transition metal It was discovered by Julius Scaliger in 1735. Structure Number of electrons: 78 Number of protons: 78 Number of neutrons: 117 Electronic configuration: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d9 6s1 Physical Properties 1) It is a solid metal (at room temperature) 2) Color: steel-gray to dark gray, shiny 3) malleable 4) ductile
Green = think the actual expt done or not in that way Red remove Blue add Experimental section Chemicals: Ultrapure water with an electrical conductivity of 18.2 MΩ cm-1 produced from nano-filter (EMD Millipore Corporation, UK) was used for cleaning, making solutions, and doing electrochemical measurements. Cleaning solvents such as ethanol was purposed from Decon Laboratories (USA), acetone was purposed from Fisher Chemicals, USA, and isopropanol was purchased from Macron Fine Chemicals, USA. Chloroauric
Along with localizing the product, businesses should adjust their advertising strategy to better suit the intended market in order to “…promote consumer awareness of its products” (Ramarapu, Timmerman, & Ramarapu, 1999). This is the third issue that U.S. businesses should address. Advertising characteristics, regulations, and customs differ between cultures. For example, it may be perfectly legal and socially acceptable to advertise a product on a billboard in the United States, but this practice
All I remember from my tenth birthday is how psyched I was about having received the very Barbie doll I’d wanted from my beautiful big sister Maggie. She’d just gone off to college, and anything we shared was automatically the most precious thing I owned. That Barbie doll with golden hair and tinsel adorned clothing became my obsession. For days I came home after school and locked myself in my room until Mother forced me to come and eat dinner with the family. Father always tried to occupy me
Growing up in the 90’s and being around during Mattel’s process of upgrading Barbie has had its positives and negatives. As a young girl Barbie made many girls very happy, there were times girls use to have play dates just to see who had the new Barbie wardrobe, shoes, car, and pets. Being a little girl and going over to a friends or relatives house just to play Barbie was the highlight of most of the girls day. The reason why is because back then, they had just came out with the new Barbie doll
Barbie, Mattel’s Iconic Doll, is a doll that allows children to imagine their futures. Back when Barbie first appeared on the shelves, she was blonde wearing a black and white stripped swimming suit. Today, Barbie Dolls have many different careers and ethnicities. Barbie getting from point A to B wasn’t easy, since she had a life filled with controversy. Should Barbie get a makeover? I feel that if this question is rearranged to say, ‘Should Barbie get a makeover to become what society believes to
Snyder1 Zachary Snyder Commander Baca Naval science spring project April, 13, 2013 “THE BATTLE OF LISSA” “THE BATTLE OF LISSA” “The battle of lissa took place on July 20, 1866. The battle occurred as part of the Third Italian Independence War”. Which Italy allied with Prussia in the course of the conflict against Austria? The main objective of the Italian’s was to capture Venice. The battle took place in the Adriatic Sea and was a decisive victory for an outnumbered Austrian Empire force over a superior
Jacques Coustean The country of France has contributed many brilliant cultural figures over their nation’s history. There is a long and complicated history of rulers, musicians, artists, and philosophers. But what name was the first to come to mind when I began to search for an artist from my ancestor’s country of origin? None other than Jacques Cousteau, the red-knit-cap-wearing, fishy-loving filmmaker who pioneered underwater photography. Through the use of documentary, Cousteau brought up
am going to talk about acids and bases in the mining business. Acids and bases have many uses in this field, and are actually very important. First, I will talk about hydrochloric acid, and its use in the mining field. Second, I will talk about aqua regia (an acid). Lastly, I will talk about ammonia (a base). In the mining field, hydrochloric acid can be used to clean ore and concentrates (a concentrate is the desirable metal along with undesired substances such as dirt, sand, or minerals). You want
irregular grains that contain the ore also contain other rare metals, such as iridium, osmium, palladium, rhodium, and ruthenium. The grains also contain small amounts of iron, copper, chromium, and titanium. The grains must be introduced to aqua regia, which dissolves the platinum and can then be collected. Platinum is a rare element on Earth. Platinum makes up an estimated 0.01 parts per million in the Earth's crust. A large nugget of platinum will be found very rarely. The largest nugget
Furthermore, it is used to produce certain dyes, which are used as food coloring, in the textiles industry and even as indicators. Royal water or aqua regia (HNO3+3 HCl) is a solution created by mixing one part concentrated nitric acid (HNO3) and three parts concentrated hydrochloric acid (HCl), which is used to clean glassware in the laboratory. Aqua regia is also used in the purification of gold and platinum. Very dilute solutions of aqueous ammonia (NH4OH) approximately ten percent w/v (weight per
Alchemy, in modern times, became synonymous with pseudoscience and showmanship. Making gold was proven to be effectively impossible, and alchemists did spend a great deal of time trying to make gold. Sometimes they orchestrated elaborate and large scale frauds to convince people they had succeeded. Making gold, however, was just a small part of what alchemists tried to do. Alchemists were among the foremost scientists of their time and they made huge strides in technologies and massively advanced
Alchemy, ancient art practiced especially in the Middle Ages, devoted chiefly to discovering a substance that would transmute the more common metals into gold or silver and to finding a means of indefinitely prolonging human life. Although its purposes and techniques were dubious and often illusory, alchemy was in many ways the predecessor of modern science, especially the science of chemistry. The birthplace of alchemy was ancient Egypt, where, in Alexandria, it began to flourish in the Hellenistic
two main compounds. These compounds are the Chloral-auric acid as well as the auric chloride. When we come to how gold reacts with certain acids, it is clear that there is an acid that is very able to dissolve this element. This acid is known as Aqua regia and is a combination of hydrochloric and nitric acids. Gold is not able to react with non-metals. Under this case, it only reacts with halogens and forms what is known as halides. The main alloys that can be used to make gold harder include platinum
palladium, and rhodium), so termed because of their inertness, or reluctance to enter into chemical reactions. Gold will not react with common acids but is attacked by a three-to-one mixture of hydrochloric and nitric acids. This combination is called aqua regia because it reacts with the so-called royal metal. Gold will not combine directly with oxygen, but oxides may be formed indirectly. Gold will also combine with the halogens (fluorine, chlorine bromine, and iodine) and with the cyanides. The purity
Have you ever wanted to know every fact about gold? Well today is your lucky day. The human body is composed of many different elements. Over 96% of our body weight is a combination of oxygen, carbon, hydrogen and nitrogen. While it's not the main ingredient, gold can also be found knocking around inside our cells. An average 70 kilogram human contains 0.229 milligrams of gold. gold is a transition metal. Transition metals are unique, because they can bond with other elements using not just their
A Note on Application of Commercial Surface-Enhanced Raman Scattering Substrates in Trace Analysis Reply to reviewers As noted, we observed the presence of the impurity during our study of MBA deposition. Preliminary identification of BPE was done after comparison with literature data and BPE appeared in our laboratory (and also in all the Department) only after this step. Absence of the BPE in the used EtOH was proved by a simple experiment, described in Supplemental Material: Klarite chips of
Stainless steel, especially, Austenitic stainless steel, because of their high corrosion resistance and customizable mechanical properties has become an indispensable part of the regularly evolving modern day technology. Stainless steels of various grades find applications in numerous fields starting from the household to the nuclear reactors; from food and beverage cans to construction of different automobile parts. The formation of impervious oxide layer on the surface makes it suitable for use
Throughout the course of time, there have been many influential discoveries that have ultimately reshaped and changed the thought processes around not only those time periods, but around the expanses of the experimental breakthroughs found by future generations. The unearthing of palladium (Pd) can most assuredly be considered one of those significant findings. Possessing a history full of doubt, speculation, and intrigue, palladium has proven itself to be an element of monumental importance with
Electronic Waste Taking Over Electronic waste is one of the most rapidly growing problems of the world. The cost to humanity and the earth’s ecosystem for wanting to have the latest and greatest electronic device whether it is a new I-pod, cell phone, computer, tablet or TV is staggering amounts of electronic waste. Electronic waste, or as it is more commonly referred to, e-waste, is any unwanted electronic device. It does not matter if the piece of technology is still working or not. Once the owner