Conservation of mass during a chemical change Lab Report

Conservation of mass during a chemical change - Lab Report Example This is a precipitation reaction and we expect to find a white solid formed as the reaction progresses. The two compounds are products in the Solvay process that is used in the large scale manufacture of sodium carbonate. In our second set up, sodium carbonate is reacted with hydrochloric acid. From our elementary chemistry the products we expect are sodium chloride and carbon IV oxide. Carbon IV oxide will be seen as bubbles emanating from the progressing reaction. Therefore as the carbon IV oxide is lost and this will affect the results as the mass of the products will be less than that of the reactants. In the first set up 5ml of 1M sodium carbonate was put in a clean test tube and in a different test tube 5ml of 1M calcium chloride was put. The masses of both test tubes with contents were recorded. Then the contents of the two test tubes were mixed. All observations were recorded. After the reaction was completed the contents were weighed again and the mass recorded. In the second set up, 5ml of 1M sodium carbonate was put in a test tube and 5ml of hydrochloric acid put in another. The test tubes were placed in a beaker and the mass of the arrangement taken. The two were then mixed and all observations recorded as the reaction was progressing. The mass of the set up was taken again after the reaction was over and recorded. The change in mass was 0.137 grams which is negligible. We did not expect the mass to change as using the law of mass conservation as projected by Antoine Lavoisier in 1789, the mass of the reactants should be equal to the mass of the products. There is no compound lost during the reaction and the little change in mass could be due to errors in measurement or the production of heat during the reaction. The change in mass recorded was 2.597 grams which is significant. Change in mass was expected as there was bubbling taking place as the reaction progressed which

English home 6 Essay Example | Topics and Well Written Essays - 750 words

English home 6 - Essay Example The government can decide how and where these young ones could be properly safeguarded during the day because their parents are busy at work and would like no hindrance at all as far as their work manifestations are related (Lamb, 1992). One should believe that the government has a clear cut role under such a setting because it is the government itself which can facilitate things as and when they come (Bower, 2000). The child day care centers would convince the parents that their young ones would be taken care of properly and that they do not have to worry at all. If the government wants, it can bring about some form of sanity within the related ranks and this will eventually ensure that the parents know that the government cares about them in the fact that these child day care centers have been formed which shall make their lives easier at the end of the day (Gormley Jr., 1995). However what seems as a missing link here is the fact that a number of parents are unaware of these child day care centers in the first place. Then again it is the responsibility of the government to make sure that the parents know how they can be assisted and what needs to be done to guarantee success in entirety (Moen, 1990). Since the working parents are essentially facilitating the work domains of the government itself, it is of paramount importance to know that these child day care centers are there to take care of the weaknesses which come about within the relationships that working parents do have with their children. However these strained relationships are not entirely of their own making and come up because there is the reality of work that has to be done by these parents (Henderson, 1995). Someone needs to take charge of these young ones and the child day care centers seem to be the perfect fit. If these are not present in the first place, it would be significant to realize that having them will solve quite a few problems which are there or might even crop up in the coming t imes. The gratification element comes in within the equation here as the working parents have to be given the rights that they richly deserve (Cohen, 2001). This is in the form of the child day care centers which should be opened up to take care of the problems that working parents might face in the coming times. The child day care centers exist to serve those working parents who are unable to take care of their children as and when required. However this does not give them the leeway to make use of these child day care centers even on weekly holidays and in vacations. The role of the government is an important one because it sets the exact manner under which success for the working parents could be envisaged and the same can be further bolstered with funding from the domains of the government for the long term success of the problem at hand (Auerbach, 1988). How this issue will be tackled is something that the government must address because it safeguards the rights and interests o f the commoners and especially the working class. The working parents are indeed no exception and should be given the room to exploit their skills and resources without thinking of their own family domains (Zinsmeister, 1998). All said and done, the role of the government will remain no matter what kinds of steps are taken within the building up of these child day