Chemical Elements Listed by Density

Chemical Elements Listed by Density This is a list of the chemical elements according to increasing density (g/cm3) measured at standard temperature and pressure (100.00 kPa and zero degrees Celsius). As you would expect, the first elements in the list are gases. The  densest gas element is either radon (monatomic), xenon (which forms Xe2 rarely), or possibly Oganesson (element 118).  Oganesson may, however, be a liquid at room temperature and pressure. Under ordinary conditions, the least dense element is hydrogen, while the  densest  element is either osmium or iridium. Some of the superheavy radioactive elements are believed to have even higher density values than osmium or iridium, but not enough of them has been produced to perform measurements. Elements From Least to Most Dense Hydrogen 0.00008988Helium 0.0001785Neon 0.0008999Nitrogen 0.0012506Oxygen 0.001429Fluorine 0.001696Argon 0.0017837Chlorine 0.003214Krypton 0.003733Xenon 0.005887Radon 0.00973Lithium 0.534Potassium 0.862Sodium 0.971Rubidium 1.532Calcium 1.54Magnesium 1.738Phosphorus 1.82Beryllium 1.85Francium 1.87Caesium 1.873Sulfur 2.067Carbon 2.267Silicon 2.3296Boron 2.34Strontium 2.64Aluminium 2.698Scandium 2.989Bromine 3.122Barium 3.594Yttrium 4.469Titanium 4.540Selenium 4.809Iodine 4.93Europium 5.243Germanium 5.323Radium 5.50Arsenic 5.776Gallium 5.907Vanadium 6.11Lanthanum 6.145Tellurium 6.232Zirconium 6.506Antimony 6.685Cerium 6.770Praseodymium 6.773Ytterbium 6.965Astatine ~7Neodymium 7.007Zinc 7.134Chromium 7.15Promethium 7.26Tin 7.287Tennessine 7.1-7.3 (predicted)Indium 7.310Manganese 7.44Samarium 7.52Iron 7.874Gadolinium 7.895Terbium 8.229Dysprosium 8.55Niobium 8.570Cadmium 8.69Holmium 8.795Cobalt 8.86Nickel 8.912Copper 8.933Erbium 9.066Polonium 9.32Thulium 9.321Bismuth 9.807Moscovium 9.807Lu tetium 9.84Lawrencium 9.84Actinium 10.07Molybdenum 10.22Silver 10.501Lead 11.342Technetium 11.50Thorium 11.72Thallium 11.85Nihonium 11.85Palladium 12.020Ruthenium 12.37Rhodium 12.41Livermorium 12.9 (predicted)Hafnium 13.31Einsteinium 13.5 (Estimate)Curium 13.51Mercury 13.5336Americium 13.69Flerovium 14 (predicted)Berkelium 14.79Californium 15.10Protactinium 15.37Tantalum 16.654Rutherfordium 18.1Uranium 18.95Tungsten 19.25Gold 19.282Roentgenium 19.282Plutonium 19.84Neptunium 20.25Rhenium 21.02Platinum 21.46Darmstadtium 21.46Osmium 22.610Iridium 22.650Seaborgium 35 (Estimate)Meitnerium 35 (Estimate)Bohrium 37 (Estimate)Dubnium 39 (Estimate)Hassium 41 (Estimate)Fermium UnknownMendelevium UnknownNobelium UnknownCopernicium (Element 112) unknown Estimated Density Note that many values listed above are estimates or calculations. Even for elements with known densities, the value measured depends on the form or allotrope of the element. For example, the density of pure carbon in diamond form is different from its density in graphite form.

Accidents at Home Essay Example for Free

Accidents at Home Essay Choose cite format: APA MLA Harvard Chicago ASA IEEE AMA Haven't found the essay you want? Get your custom sample essay for only $13.90/page ? We’d all like to believe that our home is a secure, comfortable environment, but we tend not to notice that this very place holds the potential to become very dangerous. In fact, most accidents occur in and around our homes, with the consequences involving anything from minor abrasions to a fatality. Believe it or not, water one of our most valued necessities in life, can not only provide life but also take it. Young children are often the victims of this hazardous feature. All it requires is for the parents to look in the other direction and the next moment, a curious child can wander in the direction of the family swimming pool. An unsurprised toddler can easily fall into the pool and drown. Due to the alarming increase in infant deaths due to drowning, a change in council legislation now demands the presence of childproof fencing around all pools. However there is always the slightly older and more mischievous lot of children who have managed to overcome the barriers of the fencing around pools. As a result, child drowning cases have continued to occur. These numbers have led to a council initiative of childproof safety gates to be manufactured. This requires an adult to open these gates, ensuring parental supervision. In response to the broken bones and concussions that have occurred around pool areas due to older children and teenagers running and playing carelessly around the pool, there has been the further implementation of non-slip pool pavers and surrounds. Nevertheless water inside the home can also be the cause of various accidents, especially in the bathroom which often have wet floors. Wet tiles that may cause a soothing sensation under the feet on a hot day, can instantly become the source of harmful falls, for people of all ages. A slip on a wet floor can lead to bruises, a broken bone or even concussion. In order to prevent these incidents from occurring, households are being urged to make use of the vast array of non-slip mats and non-slip stick-on designs that can even add colour to assist the visually impaired elderly residents. As we age, the activity of our nervous systems tends to function at a lower rate, causing our bodies to react more slowly, so in the event of an accidental fall, the time taken for the brain to send out signals to alert the effectors is lessened as we age. When an elderly person falls, there is the potential for severe injuries because their fragile bones can easily be roken. To ensure their utmost safety, hand rails around the bath are becoming common. Furthermore as water is heated, the hot liquid and steam that results can cause severe scalding accidents that can inflict a single burn or a serious injury. This is especially true for the elderly, with their delayed sensory reaction times, because they can be under a hot shower for several minutes before realising that they’re burnt. As a result, water temperature regulators have been installed in hospitals and the homes of the elderly, in an attempt to minimise the burns caused by hot water. Children can also be subject to similar types of burns when left unsupervised for a moment in bathrooms. Being fascinated by the motion of a rotating tap, these young minds may find themselves running hot water long enough to accidently burn themselves. For this reason, there are childproof tap covers that prevent the tap from turning on, to prevent curious children from scalding injuries when handling hot water. In the kitchen, a slip of the hand is all it takes to cause severe third degree burns. Therefore community service advertisements appear from time to time on television and on the radio to inform people about the hazards present in the kitchen. Even the steam that arises from the kettle poses certain threats. Top-opening kettles posed a potential risk for steam burns on the hand, arm and face and as a result kettles have been redesigned to open and fill at the front, thereby directing steam away from the user. Microwavable food has also proved to be a problem, because when opening the packaging, steam rushes out quickly, causing steam burns. This is why, instructions on the packaging is now mandatory alerting people to delay the time before opening. By doing this, the steam is allowed to dissipate, greatly decreasing the risk of steam burns. Nevertheless, burns are not only the result of hot liquids, because household heating poses a major threat to those who reside in the home. Open fires were once a common source of heating in many households, however the alarming number of house fires caused by curtains or furniture igniting has increased public awareness and also initiated government actions. Thus pressure has been placed on manufacturers to produce burn resistant carpets and curtain material in an attempt to reduce the risk of a stray spark causing a house fire. In order to further minimise the risk of burn injuries from open fires, a ban on installing fully open fires has been passed through government, and slow combustion fires which are a safer alternative, are readily available in many retail stores. However, during cold nights, there is an urge to leave the heater on for the entire night. This action, and the increased use of nylon sleepwear, posed a major threat of house fires while the family was asleep. Consequently, several steps have been taken by the government to ensure the safety of all individuals while they sleep. For instance, sleepwear sold to customers must have the required level of flammability labelled, in order for them to make an informed decision and about avoiding unnecessary burns. The advancement of technology has also allowed for artificial intelligence to be implemented in heating appliances in the form of temperature regulators, causing the heater to either turn on or off in order to maintain the temperature of the room without the risk of overheating and causing a fire. There has also been the danger of accidentally knocking over a heater, especially by children or pets, and this has been responsible for severe burns or even a fatal house fire if the heater came in contact with the carpet and began to burn. However the use of cut-off switches in these portable heaters has greatly minimised the risk of burn injuries and house fires, as the heater simply stops working the moment its sensors realise that it has fallen over. Yet accidents involving electricity can involve more than just electrical heating because there are many appliances used on a daily basis in the average home. Even the simple toaster or hair dryer can cause severe injuries when not correctly handled. For instance when a wet hand decides to grab the nearby hair dryer, water can seep into the electric circuit causing various degrees of electric shock. In order to minimise the risk of this occurring, safety instructions have been attached to such appliances that highlight the dangers that can arise. The toaster is another classic example, where burns have occurred simply by sticking metal cutlery into the toaster in an attempt to remove a piece of toast. Safety instructions have therefore been stuck onto these appliances in order to make people think twice before performing harmful actions. Furthermore, community service advertisements have also been appearing, informing viewers on the dangers that household electrical appliances can pose. Because curious young children can unwillingly stick a finger or a fork into the holes of a power point, safety plugs for power points have been introduced onto the market. When inserted, they prevent easy access, reducing the risk of electrocution especially amongst the younger children. Most importantly, with vast areas of the modern home powered by electricity, the possibility can always arise for a circuit overload or shortage. However being completely engrossed in our busy lives, we tend to not notice, so circuit breakers have been introduced that instantly shut down all power to the house when a threat arises, saving people from serious injuries or even a fatal house fire. Even when electricity is not present, tools and implements also increase the chance of obtaining cuts and lacerations. The preparation of any dish requires the use of knives, peelers and sometimes graters, yet these are some of the many implements that can cause accidents. For instance, the knives when kept in a drawer can see unsuspecting fingers close over their sharp teeth, whilst searching for a particular item. The cuts that result from this incident can be severe and as a result knife boards and jackets have been designed to allow knives to be safely stored. As with knives, peelers and graters only require a slight slip or fumble to cause deep lacerations. Due to these alarming occurrences, manufacturers have improved the design of these implements to include firmer bases and safety blades, in an attempt to minimise any injuries they may inflict. Children are once again victims of the many implements in the kitchen, involving cutlery and scissors. Although they might consider such items to be enjoyable to play with, the number of cuts that have been inflicted has increased rapidly. This is why plastic cutlery and scissors have been produced to allow children to continue playing in a safer environment. Outside the house, there are a variety of tools that can inflict even worse damage. Garden tools can cause severe lacerations if carelessly touched or used, due to their sharp edges. For example, the saw with its sharp teeth can inflict severe cuts so to minimise the likelihoods of such injuries, safety packaging now accompanies these potentially dangerous products, allowing them to be stored safely. In the garden shed, specially padded gardening gloves are also found which help prevent unexpected cuts from thorns or sharp branches that are incurred while performing regular garden jobs. Besides the tools on the shed or garage shelf, there are a wide range of substances, some more dangerous than others. Apart from the cuts, bruises and burns that are inflicted from appliances and various activities around the home, the improper storage of such dangerous substances have accounted or the numerous incidents involving rushing young children to hospital. This may occur after children are attracted to the brightly, coloured tablets and consume them, thinking they are lollies. Similarly with liquids, unsupervised children can easily open and drink a colourful dishwashing liquid or shampoo, thinking it is cordial, but this can lead to serious vomiting and diarrhoea requiring medical attention. For this reason, childproof caps have been introduced on many dangerous liquids which require bo th motions of pressing down and twisting. To ensure the child’s safety when parents are busy, childproof cupboard locks have appeared in many homes, restricting children from accessing dangerous chemicals or medications. To further protect people from the dangers of overdosing or mixing pharmaceutical drugs in an unsafe manner, such as when a headache is so severe that a victim takes three different kinds of painkillers, it is now mandatory to label all substances with both safety instructions and medical advice if for example, a dangerous substance like weedkiller is absorbed, breathed or comes in contact with the skin. Bruises, broken bones, scalding and lacerations are just some of the injuries that can be inflicted on residents, in and around the home. Surely it is clear, that with the numerous cases of severe injuries, which occur in and around our homes every day, it is in fact a very dangerous place to be in. Accidents at Home. (2016, Nov 21).

Nike Growth Strategy Essay Example | Topics and Well Written Essays - 1000 words

Nike Growth Strategy - Essay Example At the time of entering foreign markets such as Japan, Europe, and others Nike Inc used the strategy of opening flagship stores and franchise. Flagship stores proved quite successful for Nike Inc due to its strength of generating compelling products that might excite the target customers. Major befit of franchising is that the company does not have to take the total risk of foreign investment. The franchise owners take all possible risks and also finance the maximum percentage of start-up cost. On the other side, the company takes more than 50% of profit for from the franchisees as their brand value. This is one most cost-effective entry process of any business for foreign market entry. Along with franchising, the company also prefer opening of flagship stores in new markets as an effective entry mode. Though this mode is comparatively more cost and risk associated strategy the company can present strong market awareness and brand presence in the new market. Again, the flagship store mode of entry allows the company to enjoy 100% profit from sold goods in these stores. In 1992, the company under consideration decided to enter India in association with SIEPL or Siera Industrial Enterprise Private Limited. The objective of Nike was to tap the Indian market and to receive royalties. The WestEnd Store of the company is the resultant of partnership with Timera Group which is also a leader in the wholesale and retail manufacturing across the areas of U.S., Europe, and the Middle East.

Cell phones at school Essay Example | Topics and Well Written Essays - 500 words

Cell phones at school - Essay Example Cell phones should be allowed in schools. The simple fact is that cell phones make the campus a safer place to be. During these perilous times, that consideration should be of the highest priority. In an emergency like a fire or terrorist incident, students with cell phones are able to immediately communicate with police and other authorities. This provides for a rapid response to any emergency; one that could shave precious minutes off of the time it would take to notify an administrator, have the staff member verify the emergency, and then phone officials. The classic example of this position is the tragedy that happened at Columbine High School. When two students started using guns on their instructors and classmates, "students and teachers began phoning to alert police of a shooting going on...[and] a teacher on a cell phone desperately pleaded for rescue with the police as she simultaneously shouted at her students" to stay down (Breggin, 2000, pp. 4-5). The fact that there were several groups of students located in is olated areas of the large campus makes the case for cell phones at school; they were able to be safely rescued by police as a direct result of their ability to call and advise them of their location and status. While such extreme situations occur rarely, when they do take place, cell phones in the hands of the students can save lives. The prima

Perfact reflection for a refer dissertation Essay

Perfact reflection for a refer dissertation - Essay Example I discovered I have poor time management skills because of the fact that I was unable to fully adhere to the time schedule that I had set for myself and in most cases I was forced to carry forward certain tasks beyond the deadline that I had previously set. I should great strengths in regards to records keeping and management since I was able to refer back easily to all the records that I had collected before starting to write the dissertation. Secondly, I showed great strengths in handling people since none of the respondents was harsh to me or refused to cooperate. This showed that I knew how to convince people and engage them in conversation up to the point they willingly agree to participate in my research project. The main problem that I encountered was limited secondary resources that directly touched on my research topic or objectives. This is to say that the number of scholarly books and articles that touched of personal selling and in stores, sales of Blackberry in stores that are located in China were not easily available. The lack of scholarly books and articles that directly covered my dissertation topic or objectives did not discourage me, but rather it confirmed that my research project was unique and it was bound to help in building the body of knowledge in marketing studies. That said, I solved the problem by relying on scholarly books and articles that indirectly touched on the subject, for example sources that touched on direct marketing and personal selling were completely relevant and useful. Secondly, I applied the use of internet sources from credible sites that touched on my research topic directly or indirectly, these sources helped to bridge the gap caused by limited scholarly books and articles. The methodology that I chose incorporated the application of both primary and secondary research, which validated the research findings in the sense that secondary data were used to validate

Three negative impacts of Parental divorce on children in Contemporary Research Paper

Three negative impacts of Parental divorce on children in Contemporary China - Research Paper Example The number of separations and divorces is still less than the United States but the marked difference is becoming less day by day. And the impact it has on Chinese children is pretty bad. They feel inferior to everyone else all of a sudden and cannot help but think that they have a broken family even if their parents ended it at the best of terms1. The Government of China has certain rules that everyone has to follow and one of them is the famous one child policy. If the one child of the family loses the only family he has ever known, it crushes him completely. This is one of the greatest negative impacts that take place, which he has, no sibling to share the scenario with. Most parents fight but get back together because they have various children and find sense and compassion in one of them, enough to patch things up. This is not possibly here because all alone; the child faces the worst of the deals and often and understandably so thinks that no one can understand what he is going through. Even though divorce is not uncommon in China anymore, it is still somewhat not an acceptable thing in society. To escape from the prying eyes and the pinging gossiping sessions, more often than not the parent moves away to another country. Usually it is the parent with who the child remains, through a custody settlement. This also has a negative impact on the young one. Leaving behind everything they ever know, they become accustomed to the new world, often feeling incomplete and hopeless. The reverse effect can also take place. Sometimes no one moves anywhere and the child has to face a lot of discrimination amongst the peers and the society because it is still an unacceptable trait in a lot of areas of China. Chinese people are usually very family oriented and have a fixed set of ethics and values, even in these times where such things are rarely found. It is

Oil and Gas Management Essay Example | Topics and Well Written Essays - 2000 words - 1

Oil and Gas Management - Essay Example This is achieved mainly through: Local content participation can be measured based on a given project, an associate of the project or based on the country as a whole. Local content can be defined as the value added to a host nation via the activities generated by gas and oil production (Wise and Shtylla 2007). Many analysts are of the view that the effort and time spent developing local content participation strategies can be of commercial and social benefits which can generate enormous economic growth as well as have a huge share in sustainable development (Petro 2010). Oil and gas companies are different and hence it is almost impossible to achieve a successful local content participation program. To achieve a successful local content participation program, a number of key factors are to be involved. They include: A host of nations have made considerable progress in the implementation and advancement of local content participation but the issue still remains of concern. As a result, more efforts and time are necessary to realise an improvement in the local content participation practices. It is estimated that 20 years from now, 90% of hydrocarbon production will be a product of developing nations (Baker 2007). This list of developing nations that extract gas and oil have introduced the local content participation requirements into the regulatory frameworks that govern the developments of natural resources. Due to the increasing importance for the local content participation, Statoil (2008) argues that most companies view local content concept as a strategic issue with direct impacts on vital business operations, for instance, procurement and business development. In response, many developing countries are coming up with innovative tools and strategies that are directed towards meeting the requirements set by local content policies as well as contribute to