Strontium chloride hexahydrate Essay Example

Strontium chloride hexahydrate Paper The following are possible factors that may contribute to acheiving a higher yeild. Firstly, it is possible that there was contamination from outside sources, such as lint or dust particles that could have fallen into the drying precipitate. Secondly are impurities accumulated through water. Non-distilled water can contain many minerals and impurities , aswell as absorbing chemicals in the surrounding air which can skew results. According to the city of Ottawas website, there are many contaminants in water, the two of those being fluoride and chlorine. Fluoride is naturally present in the air and soil, and can dissolve into water. Chlorine is used by the city in the water to kill bacteria. Average tap water contains 0. 7 mg/L of fluoride and 100 ppb, or parts per billion of chlorine. These insignificant substances, in additions to those not named here, can change the way the reaction takes place. Thirdly is lingering moisture, which can be present because of thick acumulation of precipitate which causes moisture to remain at its center. Water could also be present due to outside sources, such as higher than normal humidity levels present in the laboratory or water bottle fights that may have taken place and interacted with the results. To validate this reasoning, another student who acheived a higher yeild, Yannick Brisebois notes in his analysis that he was closely located to the water fight, similarily to this experiment. Lastly, misreaction is another way the precipitate was higher than expected. The reactants could have possibly reacted with the levels of fluorine or chlorine in the water, as covered in the example above. We will write a custom essay sample on Strontium chloride hexahydrate specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Strontium chloride hexahydrate specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Strontium chloride hexahydrate specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Since perfect reactions are impossible, it is likely that some of the reactants were not used up in the reaction, and were left in the precipitate. This would increase the mass of the precipitate because both the strontium chloride and the copper sulphate were hydrates, which have a higher molar mass than the products because of the attached waters. For example, according to table 2, the masses of the reactants strontium chloride and copper sulphate are 266. 58 and 249. 62 g/mol respectively, while the precipitate, strontium sulphate only has a molar mass od 183. 64. Any ammount of extra reactant would weigh down the mass of the precipitate. 3. The following steps were taken to ensure the reaction went to completion. First, the ammount of transfers were kept to a minimum in order to preserve as much of the orginal reactants as possible. Multiple transfers can cause reactants or precipitate to adhere to the walls of the beakers or the funnel. There are only two transfers present in this procedure. Second, the solutions were dissolved into aqeous solutions to facilitate a reaction and increase the ammount of reaction taking place. Without a solution, the two substances would not have reacted in a solid state. Solutions also increase the likeliness of the most possible reaction, because of its containment, as opposed to a gas, and the potion of the particles within, unlike a solid. Both reactants were dissolved into water in order to maximise the reaction and ensure it took place. The reaction was finally stirred for a mintute to maximise the reaction. The stirring added heat and motion, which is another form of heat, which allows more reactant to react properly. The heat increases the speed at which the particles move within the liquid, which leads to more collisions, and finally more reaction taking place. Finally, the original beakers and the funnel were washed down with water and passed through the filter to ensure all possible remaining reactant had been added to the apparatus. Refrences: 1. Nelson 11 Chemistry (2005) 2. http://ottawa. ca/en/env_water/water_sewer/water_wells/quality/facts/index. html 3. http://sargentwelch. com/pdf/msds/Strontium_Chloride_6-Hydrate_723. 00. pdf  https://www.sciencelab.com/msds.php?msdsId=9923597

Executive Essay Topics - Easy Ways to Write Your Essay on Organizational Behavior

Executive Essay Topics - Easy Ways to Write Your Essay on Organizational BehaviorOne of the more daunting tasks that face any new employee is the ability to write an essay for organizational behavior. Organizational behavior is the common, accepted practice in the corporate world. A lot of attention is given to the organizational behavior of a company, but much less attention is given to the responsibility of the individual in those instances.There are several organizations that place more emphasis on the interpersonal aspect of management skills and less emphasis on the actual management skills of their employees. This lack of organizational behavior instruction leaves many employees with significant problems of trust with the company. Some of these problems could have been avoided by having proper instruction in the fundamentals of proper organizational behavior. Fortunately, there are several topics you can cover in an organizational behavior essay.One of the easiest organizationa l behavior topics is creating or maintaining a supportive atmosphere. You will need to focus on creating a positive working environment. This is very important. For example, you may want to include an example where the quality of work contributed positively to the total income of the employer. You may also need to talk about creating a working atmosphere of dignity and respect in the workplace.Another one of the easier organizational behavior topics is the improper behaviors of the employee. These are known as unhealthy behaviors and should be addressed before they get out of control. These include lack of personal hygiene, smoking, and excessive drinking.Other inappropriate behaviors include lack of respect for the senior management and the organization, rudeness to subordinates, and bad attitudes towards the clientele. As a general rule, the more acceptable the employee's behavior, the better off the employer is in regards to their image.The first step in writing an organizational behavior essay is to ensure that you find a topic you are comfortable with. You will need to make sure that the topic is important enough to the employer so they will give you feedback. When you get through that process, you will know what topics you should focus on.These are the best organizational behavior essay topics you can write about. The topics are quite easy to write about because they are common. The best part is that you can do it in less than four weeks. Have fun!