Qualitative Analysis Lab

You can store them on the domain itself and I would say that this is the same as a PKI server because a PKI server has more of a hierarchal ladder of trust to verify users.

The purpose of the lab was to determine the ratio of air to acetylene results in complete combustion of acetylene gas. The balanced chemical equation for this experiment was C2H2(g) + O2(g) --> CO2(g)+ H2O(l). Complete combustion is the reaction of an element or compound with oxygen to produce the most common oxides and energy. Complete combustion occurs when the fuel and oxygen combine in exact proportions to completely burn the fuel, which leaves a clean test tube. Incomplete combustion is the reaction of an element or compound with oxygen to produce some oxides with less oxygen than the most common oxides. Incomplete combustion occurs when there is not enough oxygen to react

In reference to the analysis of anions, Table 1 shows that a precipitate was formed when our unknown was combined with HNO3 and AgNO3, thus indicating the presence of a chloride ion. Because our unknown did not form a precipitate due to HCl and BaCl2, separate, effervesce, or smell, we concluded that neither sulfate, nitrate, carbonate nor

The mole is a convenient unit for analyzing chemical reactions. Avogadro’s number is equal to the mole. The mass of a mole of any compound or element is the mass in grams that corresponds to the molecular formula, also known as the atomic mass. In this experiment, you will observe the reaction of iron nails with a solution of copper (II) chloride and determine the number of moles involved in the reaction. You will determine the number of moles of copper produced in the reaction of iron and copper (II) chloride, determine the number of moles of iron used up in the reaction of iron and copper (II) chloride, determine the ratio of moles of iron to moles of copper, and determine the number of atoms and formula units involved in

In a chemistry stockroom, a vial of an Unknown White Compound was found. In order to properly dispose of the substance, the substance has to be identified .The possible compounds has been limited to one of 15 different compounds. Also, approximately 5 grams of the Unknown White Compound (UWC) were available for testing. In order to determine the properties of the compound, a series of tests was conducted. These tests included a ph test, a conductivity test, a flame test, a sulfate test, a halide test, an ammonium test, a solubility test, and a carbonate test. Using the results of these experiments, it was hypothesized that the UWC is potassium chloride. To further confirm the hypothesis, a synthesis of potassium chloride was conducted.

Heavy precipitate emerged immediately and solution turned white in color; solution then became opaque and turned light, bright blue in color.

groups. It was conducted to further the research in choice overload and paralysis of the mind.

Gipsh et al.’s (2004) study design was non-experimental exploratory survey and the study sampling was a non-probability convenience sampling strategy. As shown in table 1, a total of 42 participants, aging 47 to 83 years and with 31% men and 69% women, were recruited in the study (Gipsh et al., 2004).

OBJECTIVE: The objective of this experiment is to find the density of metals through taking physical measurements and graphing data using the Vernier LoggerPro software. This was achieved through finding the mass and the volume of multiple samples of two types of metals and finding the average density of the samples of each type of metal, keeping record of the mass and volume of each sample, and inputting the data into the LoggerPro program.

In our experiment, we want to analyze which (if any) of three vitamins can inhibit the growth of bacteria through measuring the zones of inhibition of E. coli when treated with vitamins A, C, and D. We will inoculate one nutrient agar plate with 100 microliters of E. coli. The NA plate will be broken up into four quadrants: Vitamin A, vitamin C, vitamin D, and the control. To prepare the vitamin solution, the vitamin tablets will first be finely ground up by placing them in clean, separate plastic bags and breaking them up with the back part of a spoon. Next, we will Label three (3) 50 mL with the vitamin treatment. We will pour 3 mL of.

We used a Bunsen burner, Ni-Cr wire, and the eight different metal ions for this lab. We had to place several drops from one of the solutions on the end of the Ni-Cr wire, then one person holds the wire in the flame, and the others observe the colors of each solution through the spectroscope, then record data, and then repeat each step for the other solutions. When done, clean the wire and any spills and turn off the Bunsen burner. For the unknown substance (number 3), we found out that it was barium because when we did the flame test on barium, it’s flame color was yellow and it was yellow for the unknown too. Also, the unknown and barium had the same colors on the spectroscope reading and the three colors were close to being on the same number, and the unknown didn’t fit with any of the other solutions’

Calcium Oxide, Magnesium Carbonate, Magnesium Oxide, Calcium Sulfate, Barium Chloride and Barium Hydroxide all had a similar appearance, all white powders. Most of the compounds did not dissolve in water, they turned the solution into a cloudy white and the compounds sunk to the bottom of the test tube. Barium Chloride and Magnesium Chloride were the only group 2 compounds to dissolve after being mixed into the water. The oxide elements turned to a dark purple when paired with the universal indicator because they are above the neutral point and is more alkaline than acidic.

In this lab, it was determined that the overall conversion and recycle ratio of this chemical process system (see figure D.1) are dependent on the fractional recovery of A in the separator, as well as the fractional recovery of B and the fractional conversion of A into B. It was found that in the quantitative analysis of this lab it was found that as the fractional conversion of the reaction (A  B) increases, the recycle ratio decreases and the overall conversion of A increases as well. This makes sense, as when more A is converted into B, there is less of a need for recycle. More of the A is consumed and converted into B, and as a result, there is less A to recycle. Similarly, the overall conversion of A to B increases as there is less A

The metal ions tested were calcium, copper, iron, lead, and barium. The anions tested were sulfate, carbonate, phosphate, and chloride. Table 1.1 represents the observations from the chemical reactions with the metal ions and Table 1.2 represents the observations from the chemical reactions with the anions. A scheme was built based on the two tables when a precipitate formed. The unknown metal ion was named Bloody Baron and when NaCl was added, no precipitate was formed, therefore, it couldn’t be lead. When H2SO4 was added, it could not contain barium because no precipitate was formed. Suddenly, when NH3 was added, the color turned indigo just as copper did and a little bit of a precipitate formed so iron was noted according to Table 1.1. Finally, as Na2C2O4 was added, no precipitate formed and, according to Table 1.1, iron was the only thing that did not form a precipitate. The conclusion of the unknown metal ion was correctly proven to contain iron and copper. The unknown anion was named Edward Scissorhands and it was only tested with silver nitrate (AgNO3) and barium chloride

After the filtration, the black precipitate (CuO) was dissolved by a 15ml 6M H2SO4 (Sulfuric acid), a blue mixture was formed. After adding the Sulfuric acid, a 2g zinc metal was added to the mixture and was stirred, when stirring, tiny bubbles started to appear and the change in color from blue to brown color happened. Also, the zinc metal was dissolved but not totally that made up the tiny solids. When the tiny solids were cooled, it was washed and decanted twice by a 10ml Methanol and also a 10ml Acetone.