Bohr Atom Energy Change Example Problem

This example problem demonstrates how to find the energy change that corresponds to a change between energy levels of a Bohr atom. According to the Bohr model, an atom consists of a small positive charged nucleus that is orbited by negatively charged electrons. The energy of an electrons orbit is determined by the size of the orbit, with the lowest energy found in the smallest, innermost orbit. When an electron moves from one orbit to another, energy is absorbed or released. The Rydberg formula is used to find the atom energy change. Most Bohr atom problems deal with hydrogen because it is the simplest atom and the easiest to use for calculations. Bohr Atom Problem What is the energy change when an electron drops from the n3 energy state to the 1 energy state in a hydrogen atom? Solution: E hÃŽ ½ hc/ÃŽ » According to  the Rydberg Formula 1/ÃŽ » R(Z2/n2) whereR 1.097 x 107  m-1Z   Atomic number  of the atom (Z1 for hydrogen) Combine These Formulas E hcR(Z2/n2)h 6.626 x 10-34  J ·sc 3 x 108  m/secR 1.097 x 107  m-1hcR 6.626 x 10-34  J ·s x 3 x 108  m/sec x 1.097 x 107  m-1hcR 2.18 x 10-18  JE 2.18 x 10-18  J(Z2/n2)En3E 2.18 x 10-18  J(12/32)E 2.18 x 10-18  J(1/9)E 2.42 x 10-19  JEn1E 2.18 x 10-18  J(12/12)E 2.18 x 10-18  JΔE En3  - En1ΔE 2.42 x 10-19  J - 2.18 x 10-18  JΔE -1.938 x 10-18  J Answer The energy change when an electron in the n3 energy state to the n1 energy state of a hydrogen atom is -1.938 x 10-18  J.

Comparing Nietzsche s Vision Of Geothe - 2856 Words

Many philosophers, throughout centuries of human existence, have deciphered, or at least attempted tried to cast some light on to, our purpose. Consulting their findings could give several answers on whether we should live to maximize our pleasure, minimize our pain, avoid frustration or achieve greatness. In my own considerations, though, sorting through the tumultuous noise and clutter of the world around me for the some obscured or hidden meaning was not necessary. To me, the noise and clutter is the meaning. I do not live for what is hidden; I live for what is all around me. My experiences are not tools that assist me in find some truth. Rather, they are the truth. In other words the Good in my life is, in fact, life in its entirety.†¦show more content†¦1). Robert Kennedy warned against the pursuit of more in a 1968 campaign speech, stating, â€Å"we will find neither national purpose or personal satisfaction in the mere continuation of economic progress, in endless am assing of worldly goods†¦The gross national product includes the destruction of the redwoods and the death of Lake Superior† (as cited in De Graaf, Wann, Naylor, 2014, p. 128). The gross national product is a flawed way of measuring the success of the economy because it does not consider the harms and benefits of production; it measures growth for growth’s sake. In the same vein, the success of my personal life could not be measured by quantity alone. Endlessly seeking more stuff would actively impede me in many ways. It could put me in debt and hold me back from doing the things I truly want to do. It would also be detrimental to society. Overconsumption is not just an ill-advise way to seek fulfillment, it actively hurts others and the world we share. The authors of Affluenza advocate mindfulness in consumption, recommending we pay â€Å"full attention to the real benefits and costs of our purchases, remembering the best things in life aren’t things† (Graaf, Wann, Naylor, 2014, p. 10). They a simpler life, devoid of too many unnecessary material products, has more benefits and less restraints than an elaborate and lavish lifestyle. Material

Three Little words research paper free essay sample

A new Health Information menu has been added to the disc menu for every game. The file overwrite warning has been redesigned and is now also displayed when uploading to the cloud. A [Restore File System] feature has been added to the bootup sequence when there is a system crash. Removed certain characters and smilies from the system dictionary. Media changes Upscaler Output and Cinema Conversion are now supported for Blu-ray Disc content. Support for reading metadata of AAC and M4A files (Artist, Track Name, Album, Album Cover, Year, Track Number). Game changes [PS Vita System Application Utility] has been added as a feature under [Game]. Network changes [Privacy Settings] has been added as a feature under [Account Management], allowing users to control who they receive messages and friend requests from. [PlayStation Plus] is now displayed under [PlayStation Network] for users who are not subscribed to the service. Three Little words research paper By Fuzzyse Three Little Words soc-21 13 November 14, 2013 Ashley was born in North Carolina. We will write a custom essay sample on Three Little words research paper or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page She was born to a seventeen-year-old single mom. According to her, two days compete for the worst day in her life: the first is the day she was taken from her mother; the second is the day she arrived at the Moss oster home four years later. The day she was taken from her mother, she had left South Carolina bound for Florida with her mother, her mothers husband, and her younger brother Luke. She was only three years old. Before she was taken from her mother, she was an intuitive two-year-old, soaking up language and behaviors from a crew of rowdy adolescents who were trying on adult attitudes and habits. She used to get attention by acting grown up. Her mother used to spend her time hanging out with friends, while her sister was taking care of Ashley. After her mother got pregnant with Luke, everything changed for Ashley. Dusty, her mother s husband was abusing her mother, physically and emotionally. Once he almost hit Ashley with a chair. Ashleys mom was about to leave Dusty many times but she never did because she was afraid of him. After the day Ashley was taken from her mother, she never was given back to her. Ashley spent nine years of her life in fourteen different foster homes. She was always waiting for her mom to come back and take her back to South Carolina. Ashleys mom suffered from addition problems with drugs. The government always said that she was not able to take care of Ashley and Luke. While different people who did not care about them. The worst foster home was the Moss home. Mrs. Moss was a cruel woman; she used to give hot sauce to the kids whenever they did not obey her. Mrs. Moss took away the gifts that Ashleys mom gave her. She also used to make them share their outfits with the other foster girls. Many times Ashley and the other foster kids who lived there tried to let to the social workers know what Mrs. Moss was doing to them, that she was abusing physically and emotionally of them, but they did not believe them. Ashley finally got out of that foster home, because supposedly she was not a good influence to the other kids, not ecause it was a bad place for her. After that, Ashley went to another house where things were much better. Unfortunately, Luke had to stay in Mrs. Moss foster home. During those years, Ashley saw her mother a few times. She always told her that she was about to finish the process to get her back to home. However there was something that stopped her from getting Ashley back. At the age of twelve, she was adopted by the Courters family who were the only ones who helped her and loved her. While reading the book, several events struck some emotional chords with me. These poor children lived such a horrific youth that it really tugs on someone who actually has a heart. Right off the bat the first event that really struck a nerve was when their grandfather was shot. I already felt so much sympathy for Luke and Ashley but even more so after seeing their grandfather lying almost lifeless on the ground. Even though the story didnt go into an exuberant amount of detail, its the unspoken of that story that bothers me. The grandfather was shot twice in the face so that recovery process was probably Just as horrific as the actual shooting itself.