Friday, December 27, 2019

10 Interesting Sulfur Facts

Sulfur is element number 16 on the periodic table, with element symbol S and an atomic weight of 32.066. This common nonmetal occurs in food, many household products, and even your own body. Sulfur Facts Here are 10 interesting facts about sulfur: Sulfur is an essential element for life. Its found in amino acids (cysteine and methionine) and proteins. Sulfur compounds are why onions make you cry, why asparagus gives urine a weird odor, why garlic has a distinctive aroma, and why rotten eggs smell so horrible.Although many sulfur compounds have a strong smell, the pure element is odorless. Sulfur compounds also affect your sense of smell. For example, hydrogen sulfide (H2S, the culprit behind the rotten egg odor) actually deadens the sense of smell, so the odor is very strong at first and then vanishes. This is unfortunate because hydrogen sulfide is a toxic and potentially deadly gas. Elemental sulfur is considered nontoxic.Mankind has known about sulfur since ancient times. The element, also known as brimstone, primarily comes from volcanoes. While most chemical elements occur only in compounds, sulfur is one of relatively few elements that occur in pure form.At room temperature and pressure, sulfur is a yellow solid. Its usu ally seen as a powder, but it forms crystals, too. One interesting feature of the crystals is that they spontaneously change shape according to temperature. To observe the transition, melt sulfur, allow it to cool until it crystallizes, and observe the crystal shape over time.Were you surprised you could crystallize sulfur simply by cooling the melted powder? This is a common method of growing metal crystals. While sulfur is a nonmetal, like metals it wont readily dissolve in water or other solvents (although it will dissolve in carbon disulfide). If you tried the crystal project, another surprise might have been the color of sulfur liquid when you heated the powder. Liquid sulfur can appear blood-red. Volcanoes that spew molten sulfur display another interesting feature of the element: It burns with a blue flame from the sulfur dioxide that is produced. Volcanoes with sulfur appear to run with blue lava.How you spell the name of element number 16 likely depends on where and when yo u grew up. The International Union of Pure and Applied Chemistry (IUPAC) adopted the sulfur spelling in 1990, as did the Royal Society of Chemistry in 1992. Up to this point, the spelling was sulphur in Britain and in countries using the Roman languages. The original spelling was the Latin word sulfur, which was Hellenized to sulphur.Sulfur has many uses. Its a component of gunpowder and is believed to have been used in the ancient flamethrower weapon called Greek Fire. Its a key component of sulfuric acid, which is used in labs and in making other chemicals. Its found in the antibiotic penicillin and is used for fumigation against diseases and pests. Sulfur is a component of fertilizers and also pharmaceuticals.Sulfur is created as part of the alpha process in massive stars. It is the 10th most abundant element in the universe. Its found in meteorites and on Earth mainly near volcanoes and hot springs. The abundance of the element is higher in the core than in the Earths crust. Its estimated there is enough sulfur on Earth to make two bodies the size of the Moon. Common minerals that contain sulfur include pyrite or fools gold (iron sulfide), cinnabar (mercury sulfide), galena (lead sulfide), and gypsum (calcium sulfate).Some organisms are able to use sulfur compounds as an energy source. An example are cave bacteria, which produce special stalactites called snottites that drip sulfuric acid. The acid is sufficiently concentrated that it can burn skin and eat holes through clothes if you stand beneath the minerals. Natural dissolution of minerals by the acid carves out new caves.Although people always knew about sulfur, it wasnt recognized until later as an element (except by alchemists, who also considered fire and earth elements). It was 1777 when Antoine Lavoisier provided convincing evidence that the substance was indeed its own unique element, worthy of a place on the periodic table. The element has oxidation states ranging from -2 to 6, allowing it to f orm compounds with all the other elements except the noble gases.

Thursday, December 19, 2019

Physics Of The Field Of Medicine - 1381 Words

The study of physics over the last year has been intriguing and extremely valuable to my education to pursuer a career in the field of medicine. Learning physics in the classroom is one thing, but being able to apply it to everyday scenarios is what has made this course so interesting compared to other various science courses offered at Gonzaga. When I was three years old my parents bought me my first pair of hockey skates and since then hockey has consumed my entire life. Upon receiving this assignment I was enthusiastic about applying knowledge form the classroom into my hockey life. The above picture was taken my sophomore year at Gonzaga at Eagles Ice Arena in Spokane, Washington. I am winding up in preparation to take a slap shot†¦show more content†¦Newton’s Second law states that the acceleration of an object is directly proportional to the net external force and inversely proportional to the mass of an object. Force and acceleration are both vectors and will p oint in the same direction. Newton’s third law states that forces occur in pairs, so when a force acts on an object there will be a reaction from the object to where the force is applied. The second object will exert a force back onto the original object that is equal in magnitude but opposite in the direction. Newton’s laws are able to yield the equation F=ma. In the case of figuring out the hockey shot a=(Vf2-Vi2)/2Δx, and when you combine the equation together you get F=m=(Vf2-Vi2)/2Δx. All that is needed to figure out the force on the hockey puck is the initial velocity, the final velocity, the mass and the distance traveled. The mass of a hockey puck is .160kg and the length traveled is 17.3 meters. The initial velocity of the puck in my case was 0 m/s and the final speed of the puck was 87 mph measured by a radar gun which converted to 38.89 m/s. With all this information the force could be calculated. F=.160kg(38.89 m/s 2 – 0 m/s 2)/2(17.3m) which equaled 6.99 N or 7.00 N. The second thing I wanted to look in this picture was the transfer of kinetic energy from the stick to the puck and to see if kinetic energy would be conserved in this collision. A collision is classified as is momentum being conserved from one moving object striking another

Wednesday, December 11, 2019

Is Googel Making Us stupid stupid free essay sample

Is Google Making Us Stupid? by Nicholas Carr illustrates to me that the internet is slowing down the development of our brain. I agree with his argument that technology has affected out attention span, he sets an example of how we now cannot concentrate on the readings, Scott Karp, and Bruce Friedman, both agree that their ability to read long articles has been affected by the web. Also, I agree with Carr that we are becoming low thinking people because the internet gives us easy access to have quick information research. However, I think that Google and the internet are actually helping us to learn new information. It is because when the computers are not here, we do all things by hand. If you want to know what a word means, you would need to get a dictionary. If you want to look up something that your teacher mentioned in class, but you dont know what it is, or how does it look like. We will write a custom essay sample on Is Googel Making Us stupid stupid? or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Then, you would have to find the encyclopedia to look for it. In nowadays, we do everything by computer, communicate with people, blogging, searching, watch videos, etc. We can learn new information quickly by searching from the internet. As Carr said, It [the Net] injects the medium’s content with hyperlinks, blinking ads, and other digital gewgaws, and it surrounds the content with the content of all the other media it has absorbed. A new e-mail message, for instance, may announce its arrival as we’re glancing over the latest headlines at a newspaper’s site (Carr 62). They take away our concentration, when we are reading an article there are lots of ads, hyperlinks, which would take our attentions. Thus, we will go to another website and look for other stuffs. Furthermore, Carr explains that, The clock’s methodical ticking helped bring into being the scientific mind and the scientific man. But it also took something away When the mechanical clock arrived, people began thinking of their brains as operating like clockwork. Today, in the age of software, we have come to think of them as operating like computers' (Carr 62), after the invention of the clocks, people have designated times to do certain things, to eat, to work, to sleep. People actually start obeying the clock. Carr believes that in the future, human will be acting like a machine and this make me think that it is actually a problem. After reading Carrs article, I realized that the internet has got into me. Internet has made it hard to stay focused when reading things you dont have interest on. When there was no internet exists, I would actually find information through books or newspapers, but now, I barely touch them. I just need to open a computer and google the information that I am looking for. And it takes shorter time instead of using a lot of time to read a long article. I think Carr does a good job on giving a lot of evidences to back up his arguments.

Wednesday, December 4, 2019

Ode To An Inspiration free essay sample

When asked to think of a person I would like to meet for dinner, my mind teems with possibilities. But for me the decision is simple. I would select the gifted vocalist and lyricist, Tori Amos. At this moment in my life there are but two things I devote my ungoverned moments to listening to music and pursuing my independent thoughts. Music has shaped my life probably more than anything else. I was brought up surrounded by the sounds of the bands of my fathers youth like the Grateful Dead and Pink Floyd. And in my own adolescence I have found nothing as comforting and stress-relieving as time spent with music. In choosing Tori Amos I am not saying that historic figures like Amelia Earhart or Abraham Lincoln havent inspired my life, but as a forthcoming woman, I find Tori Amoss spirit impressive at a time when I am shaping my own identity. We will write a custom essay sample on Ode To An Inspiration or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Identity has been hard sought for me in a world where women are, despite the womens movement, compelled to worship and value their bodies far more than their spirits. Women are faced every day with the struggle to balance their sexuality with their desires to conquer the world. And I suppose that at eighteen, I hold great respect for Tori Amos and her resilience. Her music does far more than merely leave its listener with a sense of entertainment. Tori Amoss lyrics of personal struggle command a listener to feel. To hear tales of adversity and subsequent survival is to realize that to have your sexuality violently stripped from you due to rape isnt the end. We live in a world where rape has become almost a norm and to know that this beautiful music comes from the heart of someone who was so violated has brought me odd strength. Her music motivates me to rise above the challenges. Tori Amos may not have flown solo across the mighty Atlantic like Amelia Earhart or brought a nation through its bloodiest war like Lincoln, but she has made me strong and allowed me to see that while the world is replete with obstacles ever ready to rob women of their identities, one will always be able to transcend and make beautiful music. Now, if I could only convince her to sing with me, life would be complete.