Solid A was identified to be sodium chloride, solid B was identified to be sucrose, and Solid C was identified to be corn starch. Within the Information Chart – Mystery White Solid Lab there are results that distinguishes itself from the other 4 experimental results within each test. Such as: the high conductivity and high melting point of sodium chloride, and the iodine reaction of corn starch. Solid A is an ionic compound due to its high melting point and high electrical conductivity (7), within the Information Chart – Mystery White Solid Lab there is only one ionic compound which is sodium chloride, with the test results of Solid A, it can be concluded that is a sodium chloride. Solid B was identified as sucrose due to its low electrical
The purpose of the Unknown White Compound Lab was to identify the unknown compound by performing several experiments. Conducting a solubility test, flame test, pH paper test, ion test, pH probe test, conductivity probe test, and synthesizing the compound will accurately identified the unknown compound. In order to narrow down the possible compounds, the solubility test was used to determine that the compound was soluble in water. Next, the flame test was used to compare the unknown compound to other known compounds such as potassium chloride, sodium chloride, and calcium carbonate. The flame test concluded that the cation in the unknown compound was potassium. Following, pH paper was used to determine the compound to be neutral and slightly
A: The reaction with water and vinegar was the most useful in this experiment. The physical properties were very self explanatory because the texture of the powders was all different expect icing sugar and cornstarch. Also the Ph levels were very similar of six and seven for corn starch and icing sugar respectively. d) Q: How confident do you feel about your identification of the
The purpose of conducting experiment was to determine the identity of white compound. Based on the 5 gram of unknown white compound several experiment conducted including solubility test, pH test, flame test, and ion test. Several materials including chemicals used throughout experiment and will be described through paragraphs.
I did accomplish the purpose of the lab. First, I determined the percentage of water in alum hydrate, and the percentage of water in an unknown hydrate. The results are reasonable because they are close to the example results. Second, I calculated the water of crystallization of an unknown hydrate. Furthermore, I developed the laboratory skills for analyzing a hydrate.
Objective: To determine the concentration of the three analytes ( EtAc, MeBuOH , PrOH, BuOH) or impurities in the whiskey sample by gas chromatography.
Spills and streaks are an evitable constant as old as liquids. The introduction of paper towel by Authur Scott in 1931 had proven to be a household miracle. As a result, billions of pounds of paper towels are currently being processed annually world-wide by hundreds of paper towel manufactures. Guaranteeing stores and homes unlimited access to this essential multi-purpose high demand product. The scarification of such a large number of trees is beyond unfortunate, nevertheless the sacrifice is deemed worth it considering the alternative. With the exception of the company's design, a roll of paper towel bare a striking resemblance to its neighboring rolls on the shelf. Written in fine black print on the packs of every paper towel
Names: Tyson Tang, Thomas Trayans, Jack Symes-Peschel PCG: 8GO2 Year 8 Biology A Model Intestine Introduction: Appropriate Background Information 1. What happens in the small intestine? The small intestine is mainly involved in the digestion.
DNA Fingerprinting Using Agarose Gel Electrophoresis Introduction Agarose gel electrophoresis is a form of gel electrophoresis that can separate a mix of DNA and proteins through agarose gel. It separates DNA by length or size through gel when an electric current is applied. Shorter fragments travel faster than long through the gel allowing for matches to be identified by similarity. The fragment length of DNA is different for each individual because sequences cut at specific sites. PCR or polymerase chain reaction is a technique that is used to replicated small amounts of DNA in a test tube.
1. Introduction Redox reaction between fingerprint sweat residue and the surface of metals is a major factor that causes corrosion on metals due to the presence of chlorides ions in fingerprint sweat. With exposure to sweat residue, chemical reaction happened between the interaction of sweat residue and the metal surface, which causes the metal surface to oxides and eventually degraded. Besides sweat, various controllable and uncontrollable factors, such as oxygen, moisture and environmental conditions are other factors that have an impact on how fast a metal corrodes. So, the aim of this discussion is to analyse the effects of sweat on metallic surfaces.
Ethanol in Gasoline Analysis by Gas Chromatography and Infrared Spectroscopy Introduction: In the constantly developing economy, gasoline has become an important resource used worldwide and in everyday life. Gasoline serves as the main fuel source of both private and industrial vehicles that allow a majority of the world to move from place to place. However, as the demand for gasoline increases, the supply of oil decreases and pure gasoline is hard to come by. On average, the gasoline purchased at a gas station consists of approximately 90% gasoline, composed of hydrocarbons, and 10% ethanol.
3.) Divide your 30g of white substance into the 4 test tubes evenly. You should put 7.5g into each test tube along with the water.
This discussion was aimed to observe and measure DNA molecules. Because of negative charge, DNA migrates towards the positive electrode (anode). Hence, the cathode must be placed on the side close to the contained sample wells, whereas the anode placed on the opposite position. And approximate of 100V is provided to the system, DNA molecules keep migrating until the dyes reach the end of the gel. After electrophoresis, use Ethidium Bromide (C21H20BrN3), which links with DNA molecules and fluoresces under ultraviolet (UV) light to observe the DNA fragments on the gel. Photographing the lit gel under ultraviolet light in a dark room to record the result.
By doing this experiment, I can know the physical and chemical properties of these samples. After I get my results about the physical and chemical properties of these samples, I can compare my results with the information given by the past student and identify the 5 unknown samples, finding out which sample is which substance. Hypothesis = ==
LAB REPORT 1st Experiment done in class Introduction: Agarose gel electrophoresis separates molecules by their size, shape, and charge. Biomolecules such as DNA, RNA and proteins, are some examples. Buffered samples such as glycerol and glucose are loaded into a gel. An electrical current is placed across the gel.
The labels have fallen off of two bottles thought to contain solid sodium chloride or solid sodium carbonate. Describe a simple experiment which would allow you to determine which bottle contains which solid.