Gay-Lussacs Ideal Gas Law Examples

Gays Gay-Lussacs gas law  is a special case of the  ideal gas law  where the volume of the gas is held constant. When the volume is held constant, the pressure exerted by a gas is directly proportional to the absolute temperature of the gas. The law is also known as Gay-Lussacs law of pressure temperature. Gay-Lussac formulated the law between 1800 and 1802 while building an air thermometer. These example problems use  Gay-Lussacs law to find the pressure of gas in a heated container as well as the temperature you would need to change the pressure of gas in a container. Key Takeaways: Gay-Lussac's Law Chemistry Problems Gay-Lussacs law is a form of the ideal gas law in which gas volume is kept constant.When volume is held constant, pressure of a gas is directly proportional to its temperature.The usual equations for Gay-Lussacs law are P/T constant or Pi/Ti   Pf/Tf.The reason the law works is that temperature is a measure of average kinetic energy, so as the kinetic energy increases, more particle collisions occur and pressure increases. If temperature decreases, there is less kinetic energy, fewer collisions, and lower pressure. Gay A 20-liter cylinder contains 6  atmospheres (atm)  of gas at 27 C. What would the pressure of the gas be if the gas was heated to 77 C? To solve the problem, just work through the following steps:The cylinders volume remains unchanged while the gas is heated so Gay-Lussacs gas law applies. Gay-Lussacs gas law can be expressed as:Pi/Ti Pf/TfwherePi and Ti are the initial pressure and absolute temperaturesPf and Tf are the final pressure and absolute temperatureFirst, convert the temperatures to absolute temperatures.Ti 27 C 27 273 K 300 KTf 77 C 77 273 K 350 KUse these values in Gay-Lussacs equation and solve for Pf.Pf PiTf/TiPf (6 atm)(350K)/(300 K)Pf 7 atmThe answer you derive would be:The pressure will increase to 7 atm after heating the gas from 27 C to 77 C. Another Example See if you understand the concept by  solving another problem: Find the temperature in Celsius needed to change the pressure of 10.0 liters of a gas that has a pressure of 97.0 kPa at 25 C to standard pressure. Standard pressure is 101.325 kPa. First, convert  25 C to  Kelvin  (298K).  Remember that the Kelvin temperature scale is an  absolute temperature  scale based on the definition that the  volume  of a  gas  at constant (low)  pressure  is directly proportional to the  temperature  and that 100 degrees separate the  freezing  and  boiling points  of water. Insert the numbers into the equation to get: 97.0 kPa / 298 K 101.325 kPa / x solving for x: x (101.325 kPa)(298 K)/(97.0 kPa) x 311.3 K Subtract 273 to get the answer in Celsius. x 38.3 C Tips and Warnings Keep these points in mind when solving a  Gay-Lussacs law problem: The volume and quantity of gas are held constant.If the temperature of the gas increases, pressure increases.If temperature decreases, pressure decreases. Temperature is a measure of the kinetic energy of gas molecules. At a low temperature, the molecules are moving more slowly and will hit the wall of a  containerless  frequently. As temperature increases so do the motion of the molecules. They strike the walls of the container more often, which is seen as an increase in pressure.   The direct relationship only applies if the temperature is given in Kelvin. The most common mistakes students make working this type of problem is forgetting to convert to Kelvin or else doing the conversion incorrectly. The other error is neglecting  significant figures  in the answer. Use the smallest number of significant figures given in the problem. Sources Barnett, Martin K. (1941). A brief history of thermometry. Journal of Chemical Education, 18 (8): 358. doi:10.1021/ed018p358Crosland, M. P. (1961), The Origins of Gay-Lussacs Law of Combining Volumes of Gases, Annals of Science, 17 (1): 1, doi:10.1080/00033796100202521Gay-Lussac, J. L. (1809). Mà ©moire sur la combinaison des substances gazeuses, les unes avec les autres (Memoir on the combination of gaseous substances with each other). Mà ©moires de la Socià ©tà © dArcueil 2: 207–234.  Tippens, Paul E. (2007). Physics, 7th ed. McGraw-Hill. 386–387.

Canadian Senate Analysis

Canadian Senate Analysis The current government of Canada has remained in place since the British North America Act, 1867, which established the Parliament for Canada to be comprised of three parts: the Crown, the Senate, and the House of Commons. [1] Unique to Canada’s government, which is based on the Westminster Parliamentary System, is that the upper house of parliament, or the Senate, is comprised of unelected officials. For a large portion of Canada’s history there has been a debate concerning the Senate, largely concerning its unelected officials. While there has consistently been a discussion on if the Senate should be changed, Canada’s political parties cannot agree on if this change should be a reform of the Senate or its abolishment. In recent years this debate has been revitalized due to scandals concerning senators, Stephen Harper’s commitment to reform the Senate, and the Supreme Court ruling on what would need to be done to reform the Senate. While it is understan dable that some may want to push for the Senate to be abolished, this is much too drastic of a step for Canada to take and should not be taken just for simplicity’s sake. Democracies function and exist on mechanisms that help balance the power of the governing bodies to ensure that no one body or official has too much power and abolishing the Senate before attempting to reform it would give the House of Commons too much power. Prime Minister John MacDonald’s words are often used in explaining what the Senate does when he said that they are â€Å"the sober second thought.† [2] The reasoning for this is that by having politicians that are concerned for the long term stability and integrity of Canada and its laws and not concern themselves about being reelected and the perpetual campaign or about politics. Essentially they can give their full attention to being the check on the House of Commons. In addition, section 54 of the Canadian Constitution states that bill s which deal with any aspect of money, including appropriating revenue or creating or removing a tax, must originate from the House of Commons. [3] What this then causes, because most bills deal with issues of revenue or taxes in some manner, the vast majority of bills come from the House of Commons, which creates a unique dynamic between the two houses. [4] The dynamic that is crated is an uneven balance between the two in terms of the amount of work that is done. The House of Commons is the primary body that creates legislation and the Senate largely provides review and second thought on the issues addressed in legislation. While this may be the original thought, there are flaws to it. Many ideas on how to change the Senate have been proposed over the years, but to understand the current debate the most it is best to look at what each major political party current proposes. Currently the common discourse about the Senate is divided into three areas: main the status quo; keep the Senate, but reform it; or abolish the Senate in its entirety. Political parties of Canada have often differed on how the Senate should be approached and dealt with along the three lines. The New Democratic Party (NDP), especially in recent years, has been vocal proponents of abolishing the senate. The NDP has even gone as far as creating a website to promote the idea of abolishing the Senate, citing its unelected nature and high costs as reasons for it to be abolished. [5] The Conservative Party, on the other hand, has taken a different route and has attempted to reform it. Prime Minister Stephen Harper and the Conservative Party attempted to create a system whereby senators would be elected by the provinces for nine years. [6] The legislation that proposed this came in 2011, but the constitutionality of this effort immediately came into question and went to the Supreme Court. The Supreme Court responded in 2014 when it ruled that any Senate reform must go be approved by at least seven provinces and half of the population. [7] The Liberal Party has not been as loud as the others, but did eject the senators that were part of the Liberal Caucus and released a statement declaring their support for reform of the Senate and the ejection of the senators from the caucus is the first step. [8] Each of the major political is in favor of some change to the Senate, which is a reflection of the opinion of Canadians.

Book review Essay Example | Topics and Well Written Essays - 750 words - 3

Book review - Essay Example That is to say, tracing our relationship with the world is just like discovering an undisclosed arrangement in a visual state of deception. The realities of the various entities in the world is often much deeper than what it appears superficially. The whole book explores the various entities in the universe beyond their physical stature so as to find â€Å"deeper realities† (Shubin, 4). Throughout the book, an attempt is made to find the link between the larger galaxy and the anatomy of organisms. It explains how the elements present within the human body have been derived from the atmosphere. It also mentions why helium, although one of the earliest gases, is not found within human beings because of its inability to take part in essential chemical reactions including â€Å"metabolism, reproduction, and growth† (Shubin, 16). Oxygen, on the other hand, reacts readily with other elements so its presence within the body is abundant. Thus this difference in reactivity expla ins the difference in the prevalence of these elements inside the human body. This gives us the idea how human beings may have evolved from elements that were involved during the creation of the world and galaxy. ... Shubin describes how species result from a class of living things which are in some way related to each other in terms of physical characteristics and genetic make-up. Shubin explains that since various species have some traits or characteristics which make them similar, human beings are also related to the cosmological bodies including stars and planets. This is because we are made up of the same elements which are found in such cosmological entities and therefore we were created as a meteors fell on earth transporting chemical elements with them. This means that we are related to these entities in terms of the atomic arrangement (Shubin, 18). Shubin has deeply explored the processes by which the atoms have combined by chemical reactions over the years to form stars (29). The Universe Within seeks to address some really complex details about human existence and has effectively related all the disciplines within the sciences to explain these details. The book lays out some important details connecting the history of universe creation with that of living things. The main theme of this book is the wider scope of living things and other celestial objects that came to existence before us and then paved the way for our own creation. The explanation demonstrates that living things are linked to other beings in the galaxy. The formation of human beings occurred as a result of the creation of wider special bodies which transferred the vital elements onto the earth. This idea is also affirmed the presence of similar elements within human beings. A connection is made using the chemical arrangement and proportion of elements within ourselves and our related ‘cousins’. By observing and speculating the constellations in