Personal Solutions Assignment Solid Waste I. Current Routine For my solid waste measurement, I counted the number of bags or trash I threw away daily. Because I don’t eat in my dorm or do any cooking for myself, this number is probably significantly lower than the amount of waste I realistically produce. I only take out my garbage when the bag is full so not every day has data. Over 15 days, I threw away 8 bags of waste. Each of these bags is 8-gallons and they are always full when thrown away.
effect of dosage show that when higher amount of banana peel are used, percentage of removal(lead) will increase. But, the dosage of adsorbent on 0.8g and 2.8g, its have the negative on the conentration of lead. Its because the solution has contiminated. Besides that, the solution also was stirred maximully and not regularly. This results doesn’t counted in the graph and maybe should redo the experiment with carefully. Results showed that the adsorption efficiency is highly dependent on quanttity of
Thermodynamic Properties of Solid Solutions in the System Ag2S – Ag2Se 1. Introduction This paper is about the calculation of standard thermodynamic properties of the four solid solutions in the phase diagram of Ag2S – Ag2Se. They calculated these properties using the model of regular and subregular solutions. The four solid solutions are: a restricted fcc solid solution (γ- Ag2S-Ag2S1-xSe (x<0.3)), a complete bcc solid solution (β- Ag2S – Ag2Se), monoclinic solid solution (α) from Ag2S to Ag2S0
recrystallization. The original benzoic acid solid sample used contained 5% salicylic acid, an impurity. Benzoic acid is of the following structure: Salicylic is of the following structure: For part 1, after boiling and dissolving benzoic acid in water, we allowed the solution to cool and recrystallize, first at air temperature and then on ice. As the solution cooled at air temperature, the benzoic acid started to recrystallize, with a rather gel-like appearance. As the solution cooled on ice, the benzoic acid
When ionic solids dissolve, they divide to give their positive and negative ions that make up the solids. These ions become hydrates and have the same relative proportions when in solution and when solid. The more the solid dissolves, the more the ion’s concentration increases. This increase and build-up allows for the reverse reaction to occur. In this phase of the reaction the ions crystallise out in order for the reaction to have a greater chance of occurring. Eventually the rate of dissolving
Measurement of Density Purpose: To gain an understanding of the physical property of density. To gain skill in measurement of mass and volume, in addition to the construction of graphs and the physical interpretation of slope. Procedure: Part 1 Regular solids 1. Use the metric ruler to determine the length, width, and height of aluminum and iron cubes to the nearest 0.5cm. 2. Use the balance to measure the mass of each item listed above to the nearest 0.1g. Part 2 Water Displacement 1. Obtain a 50.0mL
salt affects the freezing point of ice cream. Background Information Water is made of water and hydrogen molecules, when bonded, they form a crystalline structure called ice (worldofchemicals.com). During the change of water from a liquid to a solid, water molecules move slow so they can’t leave the intermolecular attraction between water molecules. Ion-dipole forces occur between water molecules and a sodium ion. The slightly negative charge of oxygen in water is attracted to the positive charge
of matter:solid, liquid, gas, and plasma. Where would glass fall within these states? Most people you ask might say it’s a solid of course. You can touch it and hit it and it will not give way to your hand. It makes up our windows and protects us from weather, so why would it not be a solid? Well surprisingly the state of glass, or the transition of melted glass to a more solid glass, seems to be a very debated subject in the science world. In fact, in Science Magazine’s 125th Anniversary issue which
washing the cores we put each one inside a separate test tube, and added a different pH solution in each one. After 3 minutes in these exposure solutions, we took the beet out with a dissecting needle. Then transferred each beet to a separate test tube containing deionized water. After 20 minutes in these diffusion solutions, we took the beets out with a dissecting needle and discard it. We then stirred each solution in the test tube with a stirring rod, and transferred it to a cuvette. A spectrophotometer
Submitted by: Jasmine Patel Group members: Elizabeth McLeod and Ashley Kozlyk Experiment #: 2 Date Conducted: Section: 4-02 Changes in Matter Objective To find out the different chemical and physical changes in a substance when in contact with another specific substance. Theoretical Background A characteristic property is a property which defines a substance Hypothesis Chalk test hypothesis A crushed piece of chalk will become a powder. Chalk and HCl hypothesis Pouring hydrochloric
flow from one receptacle to another. The longer it takes to flow, the more viscous the mixture. The solution which is created from mixing cornflour with water is a gel. The flour forms a suspension in the water. Gels are created by mixing liquid and solids together to form a jelly-like mixture. A gel is a semi-solid which can move around, but not as freely as a liquid. Within a gel, the solid makes a kind of network which traps the liquid and makes it unable to flow as freely as before. Hypothesis
demilitarized rocket motors can be used as an oxidizing agent in the hydrothermal oxidation of organic wastes . It has seven phase transitions3. Phase transition of ammonium nitrate The IUPAC defined polymorphic transition as “A reversible transition of a solid crystalline phase at a certain temperature and pressure (the inversion point ) to another phase of the same chemical composition with a different crystal structure” . The crystal structure (II) is found to be disordered tetragonal, space group
cycle of copper through many chemical reactions. What we are going to do is take a piece of copper metal put it through a series of reactions that change it¡¦s state of matter and chemical formula, but in the end, we will return it to it¡¦s normal solid state. The idea of this lab is to try to recover as close to 100% of the copper we started with. Theoretically, this is possible, but for inexperienced college students, retrieving 100% of the copper metal is near impossible. There are five reactions
between electrodes, in the solution. Cations (a positively charged ion that migrates to the cathode, a negative electrode) carry positive electric charges toward the cathode. Anions carry negative electric charges toward the anode, positive electrode. Strong electrolytes release many ions and conduct electricity well. Weak electrolytes, like acetic acid, don¡¦t release many ions and conduct poorly. Non electrolytes, like sugar, release no ions and form non conducting solutions. A couple electrolytes
Qualitative Analysis: There are two general form of analysis; Quantitative analysis and Qualitative analysis. Quantitative analysis determines the quantity of a substance as Qualitative analysis identifies its quality. It can be considered as a branch of chemistry. One which is limited to identification of a singular or group of elements, ions, or compounds in a sample. It is, nearly, always applied when in need of performing an experiment, test, etc…since it is usually the qualitative analysis which
principally concerned with determining the chemical composition of materials, which may be solids, liquids, gases, pure elements, compounds, or complex mixtures. In addition, chemical analysis can characterize materials but determining their molecular structures and measuring such physical properties as pH, color, and solubility. Wet analysis involves the studying of substances that have been submerged in a solution and microanalysis uses substances in very small amounts. Qualitative chemical analysis
temperature, concentration (of solution), pressure (in gases), surface area (of solid reactants), and catalysts. I have chosen to investigate the effect of concentration on the rate reaction. This is because it is the most practical to investigate. Dealing with temperatures is a difficult task especially when we have to keep constant high temperatures. Secondly the rate equation and the constant k changes when the temperature of the reaction changes. We have no gases and solids involved therefore it is
using very high temperature to strengthen an object such as , metal alloy and aluminium , precipitation hardening process also referred to age hardening . There are three main process that involve in Precipitation Hardening , the first process is Solution Treatment , second process is Quenching , and thirdly is Aging . On the other hand , Dispersion strengthening only have two process which is aluminium alloys made by powder metallurgy are used in the nuclear power field for sheathing fuel rods
Temperature (2) Concentration of a solution (3) Pressure of gases (4) Surface area of solids (5) And catalysts. I have chosen to investigate the effect temperature has on a reaction. If I'd of had enough time, I would of done an experiment for concentration of Hydrochloric acid to see what difference the rate of reaction would be here. I wouldn't do pressure of gases, as most are 'invisible' to the human eye. I wouldn't do surface area of a solid, as the two substances we are looking
Na2CO3 These diagrams are from a previous experiment with Sulphuric acid and Sodium Carbonate. Breaking up solids into smaller pieces increases the rate of reaction, as this increases the surface area of the reactant, therefore there is a larger area for reaction to take place. However this is not relevant for my investigation as I am only using liquids, not solids. Also using a catalyst will increase the rate of reaction, but this is also not relevant for my investigation, as I