Sodium fluoride

initial hypothesis. However, I believe the data would be more consistent and solid had 2M and 4M of NaCl had been included in the experiment, rather than jumping from 1M to 3M to 5M. Discussion: For this lab experiment, the independent variable is the sodium chloride, as it was the variable being manipulated throughout the course of the experiment. The dependent variable is the boiling point temperature, as it was the variable being measured. The experimental control is the water that received…

vary, much like salt water. Also similar to salt water, slime often consists of H2O, either as a solvent or in a chemical bond. For example, “One variety of slime that can be easily made in the lab involves the addition of a saturated solution of sodium tetraborate decahydrate (Na2B4O7⦁10H2O), commonly known as borax, to a solution of glue and water” (Rohrig 3). Borax is commonly used…

M & M Three oranges were cut in half and then placed over the juicer. The oranges were then pressed down, while being twisted allowing the juices from the oranges to be collected in the tray below. The orange juice in the trays were then poured into a 250ml beaker with cheese cloth on top of it. The cheesecloth caught the larger pieces of pulp from the oranges while allowing the juice to pass. The orange juice was then transferred into six 1.5ml centrifuge tubes. The six centrifuge were then…

In this week’s reflection video, I, learned about the weapon printing design done by the process of hydro-graphics. In the video a rifle stock is used with a Dip Wizard hydrographic kit to add a camouflage pattern. The Dip Wizard’s Kit just like other hydrographic kits uses a technique of applying a printed pattern such as; camouflage or any other pattern to a 3-dimensional object. This process goes by the terms; hydro-graphics, hydro-dipping, image transferring, immersion and water print…

Lab 9: Preparation of an Iron Oxalate Complex. POST-LAB: RESULTS AND DISCUSSION 1. Write a brief summary of your experiment. The experiment was conducted by creating a K3Fe(C2O4)33H2O solution using DI water, 3.501 g of iron (II) ammonium sulfate, H2C2O, K2C2O4, and H2O2. 5 ml of ethanol was dispensed within the solution to aid in the crystallization of the oxalate. The results of the experiment did not provided crystals of the oxalate rather crystals of impurities formed within the solution…

3-(4-acetylphenyl)-6-bromo-2-(4-chlorophenyl)quinazolin-4(3H)-one (2) Compound 1 ( 0.01 mol) fused with p-aminoacetophenone ( 0.01 mol) at 160 oC in an oil bath for 2 h. Crystallized from ethanol to give redish brown crystals of 2, m.p. 210oC in 80% yield. Analysis for C22H14BrClN2O2, Calcd.: % C, 58.24; H, 3.11; N, 6.17, Found: % C, 58.31; H, 3.17; N, 6.20, IR spectrum (KBr, cm-1) showed characteristic absorption bands at 3380 (C-H aromatic), 1710 (C=O of acetyl), at 1690 (C=O of…

Everybody has heard of paper maché, but not everyone knows of the much more useful alternative, paper maché clay. It’s simple to use, and easy to fill a space. It is much better than normal paper maché clay, even if it has it’s flaws. The benefits far outweigh the flaws, making it an extremely useful tool in making masks. Masks can be made from all kinds of material, but using paper maché clay is the easiest way to have the most artistic freedom. Paper maché clay can be messy, but so can paper…

chemical called fluoride added to most public water services. These water services would include school and city water. You are most likely drinking this water at some time. Many people believe that water fluoridation protects the teeth from tooth decay, however there is actually many risks with consuming the water. The risks include risks to the body. Supplementing fluoride to public water services is unethical and creates risk to a person’s dental and overall health. When fluoride is added…

Despite the continual support for fluoride within dental, medical and scientific communities, there is marked opposition by the general public and a minority of scientists. Through a critical analysis of both the benefits of water fluoridation and its supposed disadvantages, it can be seen that its relevance and vitality for maintaining oral health is stagnant. Dental caries is a common cause of acute preventable hospital admissions in Australia, and the addition of fluoride to water systems…

During the experiment, observations were made about their physical appearance. In part I, reaction one produced a blinding, bright white light when the metal burned and the metal turned into a white powdery substance. For reaction two, there was no reaction at first and it took a long time for it to react, but then bubbles started to form around the magnesium ribbon and the substance turned into a pink-yellowish color around the magnesium strip when it was placed in the 150 milliliters beaker.…