Investigating the Thermal Decomposition Of Metal Carbonates Aim: To investigate a range of metal carbonates and see if they thermally decompose. Thermal Decomposition INVESTIGATION [IMAGE] ------- Written By Tauqir Sharif ------------------------ Research: When a metal is thermally decomposed the bond between the metal and its carbonate (carbon and oxygen) is removed and the carbonate is released as carbon dioxide. Metal Carbonate = Metal Oxide + Carbon Dioxide
Investigation of the Thermal Decomposition of Copper Carbonate Aim: Copper has two oxides, Cu2O, and CuO. Copper carbonate, CuCO3 decomposes on heating to form one of these oxides and an equation can be written for each possible reaction Equation 1: 2CuCO3 (s) Cu2O (s) + 2CO2 (g) + O2 (g) Equation 2: CuCO3 (s) CuO (s) + CO2 (g) The aim of this experiment is to prove which equation is correct. This can be done by volumetric analysis i.e. calculating the volume of gas produced. This is then
Determination of the Enthalpy Change of a Reaction Determine the enthalpy change of the thermal decomposition of calcium carbonate by an indirect method based on Hess' law. Determination of the Enthalpy Change of a Reaction Determine the enthalpy change of the thermal decomposition of calcium carbonate by an indirect method based on Hess' law. Using the proposed method of obtaining results, these values were gathered: Reaction 1: CaCO3(s) + 2HCl(aq) CaCl2(aq) + CO2(g) + H2O(l) GRAPH ¼ in
Metal Carbonate Metal Carbonate Metal Oxide + Carbon Dioxide Thermal decomposition ‘is when a substance breaks down into simpler substances when heated, often with the help of a catalyst. It’s different from a reaction because there’s only one substance to start with’. I came across this information in the EDEXCEL Modular Science revision guidebook 1. Thermal decomposition is the breakdown of a substance using thermal energy, this is not a reaction. Preliminary experiment Limewater
The Enthalpy Change of the Thermal Decomposition of Calcium Carbonate Results: For CaCO3: T1 = 17 T2 = 19 DT= 02 using 2.57g of CaCO3 For CaO: T1 = 18 T2 = 27 DT= 09 using 1.39g of CaO Analysis: In order to determine the enthalpy change for the thermal decomposition of calcium carbonate, we must work out the enthalpy changes for both the reactions of calcium carbonate and calcium oxide with hydrochloric acid. For CaCO3: Temperature change = 2ºC To find
or Death’s Acre, to clear the scientific uncertainties regarding decomposition. With the help of his students and the University of Tennessee, he built The University of Tennessee Anthropological Research Facility. This acre of land would be better known as The Body Farm and used to scientifically research bodies decaying in certain controlled situations to report on processes that affect decomposition. For instance, decomposition in water, heat, cold, and mud was observed; the activity of maggots
Determining the Correct Equation for the Decomposition of Copper Carbonate Introduction and background information: Important points to note: ‘At room temperature, 25°C and atmospheric pressure at 1 atmosphere, I mole of any gas will occupy a volume of 24 dm³.’ We will need this to work out how much copper carbonate to decompose to obtain a sufficient amount of carbon dioxide gas. To work out the amount of copper carbonate to use I will need to use the following equations: Number
waste is nutrient-related. This referrers to physical accessibility of nutrients, hence the particle surface area increases the microbial attack. (R.V. & R.N., 2014) However, the increased surface area does not necessarily increase the rate of decomposition. Two factors may be to blame. The permissible minimum particle size constraints any negative effects on the compost process. Aeration is vital for the compost process therefore the minimum permissible size ensures that a consistent porosity of
changes that cause it to change its appareance. Observing these changes can help forensic scientists determine the post-mortem interval (or time since death), which is very important when it comes to investigating unnatural deaths. The stages of decomposition are: fresh stage, bloat stage, active decay, advanced decay, and dry stage. [1] The fresh stage begins right after the heart stops beating. When the blood stops being pumped, gravity makes it settle and it changes the color of the skin where it
Angela Kelly Mr. Bowen Criminology 14th May, 2014 The Casey Anthony Trial The Casey Anthony Trial was the trial of the decade. Everyday across the country, Americans would sit in front of their televisions and watch the trial anxiously. This case is about a child, Caylee Anthony, who was found dead, but the mystery is how she died. Some say she was murdered by her mother, Casey Anthony, while others presume she drowned. Although there was a verdict, what truly happened will always remain a mystery
projected upon those who are subjugated to him. This play takes up the subject of strong women and weak men within the plot. A prominent theme within this drama is the deterioration of the male, who is aware of his role as a "father figure". This decomposition is observed by the female protagonist (Nora). It is this descent that the role of the father figure is shaped, while creating the catalyst for the catharsis or change in Nora. When the female protagonist challenges patriarchal authority
Factors Affecting the Decomposition of Marble Buildings by Acid Rain Background Acid Rain: Nitrogen acids and sulphur dioxides come out of tall chimneys and vehicles. These go into the air, and air currents carry the gases away, and they react with water vapour and oxygen. This produces H2SO4 (sulphuric acid) and HNO3 (nitric acid). The acids become part of a cloud, and it falls down to earth, as acid rain or snow. This can end up miles away from the original source. The acid rain removes nutrients
Decomposition of Hydrogen Peroxide Aim: My aim in this experiment is to investigate the effect of changing the concentration of the substance (Hydrogen Peroxide) in an enzyme controlled reaction. Prediction: I predict that the higher the amount of Hydrogen Peroxide I use then the faster the displacement reaction will be. Therefore, the less substrate I use then the slower the displacement reaction will be. Hypothesis: I performed a preliminary experiment to distinguish the amount of
your loved ones, to science. The majority of the American public will think about body donation in reference to medical schools, but a fairly new option is donation to a “body farm.” The sensationalized term “body farm” is in reference to a decomposition facility. These facilities are housed at Universities across the United States, with the majority being in the south. Dr. William Bass at the University of Tennessee, Knoxville, established the first body farm in 1981. The Anthropology Research
Coroner/Medical Examiner The sudden or unexplained death of a person has a huge impact on families and friends of the deceased, and it places a huge role of responsibility on the medical examiner to answer questions which may provide closure. Interaction with the loved ones of the deceased is a delicate matter that must be dealt with calmly and professionally. Generally, medical examiners are overachievers, objective, analytical, and optimistic. “I can’t do anything for the deceased, they’re gone
The Decomposition of Hydrogen Peroxide What factors vary the decomposition of Hydrogen Peroxide when a fixed mass of catalyst is added to it? [IMAGE]Hydrogen Peroxide Water + Oxygen Manganese Oxide(catalyst) Equipment ========= Ø Burette Ø Clamp Ø A bowl of water Ø Test tube with delivery tube Plan- method ============ Ø Measure the catalyst and the H O . Ø Then pour the catalyst into a test tube along with the H O and attach the delivery tube. Ø Start
An Investigation into the Decomposition of Hydrogen Peroxide Aim: To investigate the rate of decomposition of H2O2 with different amounts of catalyst (MnO2). Hypothesis: When H2O2 and a catalyst are mixed together, the catalyst would break down H2O2 into water and oxygen. This will result in bubbles being produced. With the data of these oxygen bubbles, the rate at which H2O2 decomposed could be found out. 2H2O2 (l) à2H2O + O2 The controlwould be to maintain the same temperature
"To See What Factors Affect The Decomposition Of Hydrogen Peroxide By The Enzyme Catalase Which Is Found In The Liver" Introduction: Enzymes are biological catalysts. They speed up the chemical reactions which go on inside living things. Without them the reactions would be so slow that life would grind to a halt. Enzymes work by when a substrate molecule bumps into a molecule of the right enzyme, it fits into a depression on the surface of the enzyme molecule. This depression is called the active
It is stated by John Locke that in the state of nature no man may take more then he can consume. “…make use of any advantage of life before it spoils…whatever is beyond this is more than his share and belongs to others. Nothing was made by God for man to spoil or destroy. (Locke 14)” Locke then goes on to say, “God gave the world to man … for their benefit and the greatest conveniences of life they were capable to draw from it, it cannot be supposed he meant it should always remain common and uncultivated
In The Snows of Kilimanjaro by Ernest Hemingway, a regretful writer and his wife become stranded on the plains of Africa, near the base of Mt. Kilimanjaro. The main character of the story, Harry, scratches his leg and develops gangrene in the cut. As they wait on a rescue plane from Nairobi, Harry reviews and evaluates his past and realizes that he has never pursued his talents in writing the way that he feels he should have. Instead of pursuing his career as a writer, he marries into money and in