Polyvinyl chloride

Purpose I’m writing to propose ATC purchase an alternative traction device instead of snow chains. The current method of complying with mandatory snow chain laws is to purchase metal snow chains for the drivers to carry through the states and provinces where it is mandatory to have them in the trucks during the winter months. Situation Snow chains are cumbersome, heavy, and are often stolen when left behind for the ETLLC group to retrieve. The approximate weight of a set of snow chains is…

Table 2. Recorded data of Physical and chemical properties of Wakefield Pond. Figure 3. Graph of temprature vs Depth in each lake. Figure 4. Graph of oxygen concentration vs Depth in each lake. Figure 5. Graph of light vs Depth in each lake. Figure 7. Sketches of plankton and relative aboundace from all two lakes Figure 8. Sketches of plamkton and relative aboundance from all two lakes. Figure 6. Fish in Wakefield Pond variety and numbers. Discussion Lake…

harsh or lye-heavy. This means that it is non-reactant to oils and can burn or irritate the human skin. After the saponification process, sodium chloride or table salt was added to precipitate the soap because soap is less soluble in salt water. This resulted to the appearance of excess bases which was floated in the solution. Also, the role of sodium chloride made the solution viscous. The solubility rule, which means like dissolves like, results to the cleansing action of soap. The polar head…

1.1 Overview: In a research lab, Mr. Z trying to formulate a colloidal dispersion system with sodium lauryl sulphate. What type of colloidal system is suitable for sodium laurly sulphate and also we have to discuss the different stability factors for sodium laurly sulphate dispersion. 1.2 Solution to the question: Introduction of colloids: Colloids are homogeneous non-crystalline substances. Here one substance is divide into more minute particles called colloidal particles and then it…

Preparing Dilutions of the Silver Nanoparticles 1. Gather all materials. 2. Put on a pair of disposable gloves. 3. Make a paper towel damp with some 70% isopropyl rubbing alcohol. Wipe down the work surface with the rubbing alcohol-dampened paper towel. 4. Using a permanent marker, label the five baby food jars #1 to #5. 5. Using the 25 milliliter (mL) graduated cylinder, measure and pour 22.5 mL of distilled water (from a new, unopened container) into each of jars #2, #3, #4, and #5. 6. Using…

A.2. Procedures for proper storage of the classroom chemicals General Requirements for Classroom Chemical Storage Store all chemicals inside a locked cabinet with sturdy shelves. Label cabinet with warning label and contents. Secure cabinets and shelving to the wall or floor. Segregate chemical storage away from students in a ventilated, locked storeroom. Chemical Segregation Store acids in a labeled, locked, corrosion resistant cabinet. 1 M hydrochloric acid, HCl acid; storage code: White.…

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What factor(s) affect the rate of reaction? Problem: What effects does temperature have on the rate of reaction? Purpose: The aim of this investigation is to investigate how changing the temperature of sodium thiosulphate affects the rate of reaction in a chemical reaction. In order to complete this practical the temperature will be changed three times and the rate of reaction will be measured each time. Variables: Independent: -the temperature of the sodium thiosulphate. Dependent:…

Introduction: DNP and research question The organic compound 2,4-dinitrophenol (DNP) is a crystalline solid with the molecular formula C6H4N2O5. The molecule is soluble in water to some extent and is fully soluble in sodium and potassium hydroxide solutions. The compound can also be explosive. It is usually used in dye, weed killers, wood preserver, photographic development among other things and it has even been used as a weight loss agent. In fact, it has been claimed to be the king of the…

1. Synopsis The main aim of the experiment is to find out the percentage of calcium carbonate in toothpaste by using back titration since calcium carbonate is an insoluble salt and does not dissolve in water. Back titration is a reverse method of titration used to obtain unknown concentration of analyte. A roughly weighed quantity of toothpaste? calcium carbonate is dissolved in a known amount of hydrochloric acid and is then titrated against sodium hydroxide. An orange colour will be observed…