Chemical compounds that are available to determine are CaCO3, CaCl2, Ca(NO3)2, mgCl2, MgSO4, KCl, HCl, HC2H3O2, KNO3, K2SO4, NaC2H3O2, Na2CO3, NaCl, Na2SO4, HNO3, H2SO4, HNO3, H2SO4, NH4Cl, (NH4)2SO4, K2CO3, 0.1 M AgNO3, 0.2 M BaCl, Mg(s), NaOH, and KOH. To start this experiment, start with the flame test by gathering a Bunsen burner and a Nichrome wire. Connect the Bunsen burner with a rubber tube to a laboratory gas. To prepare solutions for the flame test, weigh out 0.205 gram of Unknown Compound using an analytical balance and mixed it into a 140 mL beaker filled with 20 mL ionized water. Ensure that solid is completely dissolved using a stirring rod.
Some compounds have very distinctive colors when burned, such as Potassium, which is a white/purple, and sodium, which is a deep red hue. The first step for a flame test is to gather the needed materials. These include beakers, distilled water, the unknown substance, a Bunsen burner, matches, a nichrome wire, tubing to connect the gas line to the Bunsen burner, goggles, and known compounds to compare with. The first step is to make aqueous solutions of all the substances to be tested. This is done by adding .5
'Flames and Dangling Wire ' just like 'Meatworks ' portrays Earth as a kind of hell, where humans have destroyed what good parts there are about nature. "There is fog over the hot sun" emphasises the waste of humans and humanity that wastes not only nature but themselves. The hot sun would make the dump smell terrible, but they are still inside the car at this point. "A water bird lifts above this swamp as a turtle moves on the Galapagos shores" is a strong simile; a direct comparison to a prominent issue. However, nature will prevail and go above humanity, even if humans treat the earth like an experiment or their playground.
Kylie Kenneavy April 7, 2024 U.S. History Since 1877. The Triangle Fire trial was a famous trial that took place in December of 1911 after a detrimental fire broke out in March of the same year. This fire took place at a shirtwaist factory in Manhattan, New York City. 146 workers’ lives were taken during the fire from smoke inhalation while trapped inside with limited ways out, and other fatalities occurred from employees jumping out of windows nine to ten floors high.
During the Progressive Era (1890’s - 1920’s) there were political reforms and social activism in the United States of America. These acts of social activism and political reformation were to fix issues in urban areas, fix issues in the garment industry, and to make a changes so tragedies (like the Triangle Fire) don’t happen again. The triangle fire serves as a microcosm for the progressive era because they both needed reformation but action was not taken until things became extreme. Right before the Progressive era, America was full of living condition issues, political leader problems, and issues among the people. A serious urban issue included “Laws regulating factories were worthless if not enforced, a truth horribly demonstrated a
There are two parts to fire investigations: the fire scene investigation, followed by the fire debris analysis. In the fire investigation phase, the primary focus must be to determine the origin(s) and cause(s) of the fire. The origin and cause are irrevocably connected: if the origin cannot be determined, then the cause cannot be determined, and further, if the origin determination is incorrect, the cause determination will also be incorrect. The fire debris analysis, more so like other forensic sciences, takes place in a lab where analysts attempt to determine whether ignitable liquid residues (“ILR”) are present, and if so, what the chemical nature of these ILRs are, and whether potential accelerants are found on the samples. Upon arriving at the scene, investigators will often use a combination of the following sources to determine the origin of a fire: witness information and/or electronic data, fire patterns, arc mapper, and fire dynamics.
In April 2013, Matthew Yglesias, an American Economics Journalist proposed the people of Bangladesh would not appreciate having stronger safety standards in their country because it would cause undue harm economically. He asserts Bangladesh should have different lower standards for safety because they are a poorer country. Most of the people involved in the New York tragedy of 1911 also known as the Triangle Fire, would not agree with Matthew Yglesias on his assertion that lower economic status would be an indication of lower safety standards in factories. Namely, the workers, the union leaders, the progressive reformers and the political leaders would all vote for higher standards commiserate with the United States. The only ones who would not argue with Yglesias are the owners of the Triangle Factory with their vested interest, their own problems of multiple fires and accusations of safety neglect.
The goal of this experiment was to use gas-forming reactions to find the best ratio of oxygen to hydrogen for a combustion reaction in order to launch the pipet rocket the farthest. The original hypothesis was that a 2:1 oxygen to hydrogen ratio would result in the farthest launch of the rockets when oxygen added first to the reaction. This hypothesis has been disproven; it has been found through trials that a 1:2 oxygen to hydrogen ratio with the addition of oxygen to the reaction first yields the greatest propulsion of the rockets. When addressing the balanced equation of reaction C, 2 mol of hydrogen reacts with 1 mol of oxygen to produce 2 mol of water. This is the first indicator of how this 1:2 oxygen to hydrogen ratio will be favored.
Feelings of Inadequacy and Low Self-Worth Feelings and emotions can manifest themselves in many ways. Some individuals bottle them up while others wear them on their sleeve. Guy, from Edwidge Danticat’s “A Wall of Fire Rising,” focuses on operating a hot air balloon to escape his feelings of inadequacy, even at the expense of his family. The author uses Guy’s feelings of inadequacy to show how poverty and social expectations can take a toll on a person’s idea self-worth. While others may interpret Guy’s motives differently in the end he is successful in avoiding his feelings but left a broken family behind.
Detection Of Fire Accelerants Fires can be set in a number of ways. Setting a fire does not require the use of an accelerant, but it frequently exists in arson and accidents as well. Its important to note, flammable liquids and accelerants are also not always one and the same and can vary in type. The vapor from accelerants such as a flammable liquid supports the flame over the material, which can be either easy or very difficult to detect. The accelerant can leave visible physical traces, or the trace of the chemical property is left behind.
A flamethrower is a device designed to project flames and massive clouds of smoke in a controlled manner during wars. It was mostly used in battlefields, fortifications, bunkers and any other closed or shielding location. It was used because it can jet out flames up to 20 yards away from where the person controlling it is standing. It was also created to be carried and used by a single soldier. The device was first used on February 26, 1915 by the German 3rd pioneer regiment.
For some characters in the stories Danicat writes about, death provides the only freedom possible. They have gone through so much that all they have is false hope. And when that fades away all they have is the truth that things will not get better for them. With the government being as strict as it is and the living conditions being as horrible as they are, it is no wonder that people find freedom in death. And freedom in death is not just suicide, but dying in the action of finding freedom.
Alicia Suskin Ostriker's, “The Window, at the Moment of Flame” and Jack Gilbert's Michiko Dead” are poems that connect to the reader to deliver different, yet powerful and complex themes. There are different thematic statements that really bring out the author's strong feelings behind what many may think the thematic concepts says. “The Window, at the Moment of Flame” was written two weeks after 9/11 showing a glimpse of what it means to be an innocent American in a world wracked by violence. Ostriker says she was trying to "mostly tap a sense of looking on helplessly at human madness"(Friday Pick). Her poem is written in the first person point-of-view and we see directly into a child’s mind in the first line, and as the distance increases
In this lab we studied the properties of hydrogen and oxygen gases in order to determine the best chemical ratio of H2:O2 for the explosive reaction between the two gases when forming H2O. To preform this lab, we tested different ratios of hydrogen and oxygen by taking Zinc and hydrochloric acid to form hydrogen and manganese and hydrogen peroxide to form oxygen. Once we made these two gases we collected them by putting a pipet full of water on top of the stopper. We tested different ratios like 1:1 H2:O2, 2:1 H2:O2, 1:2 H2:O2, 3:1 H2:O2, 1:3 H2:O2. When testing our ratios, we believed that the ratio 2:1 was the best ratio for explosive reaction between the two gases when form H2O because of the loud pop and flame reaction it produced.
Introduction: This lab report discusses an experiment to study the difference in the burn rate of various colored candles. The objective of this experiment is to analyse the outcome of burning 5 different colored candles including white under the same control variable for 60 minutes. The white candles used in this experiment are pure and no chemicals or dyes are added to it. They are normally made from paraffin wax with a wick in the middle.
