Chemistry Essay Examples Page 20

Gravimetric analysis can be used to determine the quantities of both cations and anions, e. g. or chloride ions precipitated and weighed as silver chloride. Common anion concentrations measured Include chloride, sulfate, bicarbonate and fluoride Ions. Total dissolved solids (TDS): Total dissolved solids (TDS) are determined by evaporation to dryness of a known volume of…

Introduction In the words of Jones (1992:4), a “hazard is a physical situation with a potential for human injury, damage to property, damage to the environment or some combination of these”. These hazards have several consequences ranging from death, illness, injury, damage to a person, property or plant, production and product loss. Hazards could either…

Twenty years ago it was not possible to discuss satisfactorily the “comparative” biochemistry of photosynthesis. The reason is a simple one: there was only one kind of photosynthesis known. This is the basic food-forming process carried out by green plants when they are properly illuminated. The main features of photosynthesis had been discovered in the…

Discussion The lab was completed as instructed and the results obtained were used to plot a graph of pressure against strain for each of the three grids. The line produced by the ratio plotted was linear in nature which yields that pressure is proportional to strain. This was gave a direct relation to Hooke’s law…

Tuesdays lab group. As a source of error, during both of our crystallization, a lot of product was stuck on the filter paper and therefore it wasn’t included in our final product. Also, a lot of product went through the filter paper and down into the Erlenmeyer flask which we disposed of. Originally, the temperature…

Introduction: Lycopene is a carotene because of its carbon and hydrogen composition. It is red in color and a member of the carotenoid family. Members of the carotenoid family play integral roles in plants. They use the absorption of light to aid in photosynthesis, and protect chlorophyll from damage. In humans, Lycopene acts as an…

Qualitative Data When amidosulphuric acid was diluted with distilled water, the beaker feels cold. When the phenolphthalein indicator was dropped into the solution, the solution color does not change and remains clear. When the diluted amidosulphuric acid was titrated with the sodium hydroxide solution, the color of the solution turns to pale pink and it…

Urine is a typically sterile liquid by-product of the body secreted by the kidneys through a process called urination and excreted through the urethra. It is also an aqueous solution of greater than 95% water, with the remaining constituents, in order of decreasing concentration urea 9. 3 g/L, chloride 1. 87 g/L, sodium 1. 17…

The top five manufacturers and users of ethyl alcohol in 2005 were Brazil bring forthing 4.35 billion gallons per twelvemonth, The United States bring forthing 4.3 one million millions gallons per twelvemonth, China bring forthing 530 million gallons per twelvemonth, The European Union bring forthing 250 1000000s gallons per twelvemonth and India bring forthing 80…

Discuss the different ways in which metabolic procedures are regulated and the possible effects for an being if this ordinance malfunctions. Metabolism is many co-ordinated chemical reactions happening within a cell of an being to prolong life ( Berg et al. 2006 ) . Obtaining foods, bring forthing wastes, turning, reproducing, accommodating to different environments…