Barium Essays

Experiment 2: Preparation and Spectrophotometric Analysis of Copper(I) Iodide Abstract: This experiment aims to determine the concentration of “Purified CuI” sample. Crude CuI is obtained by reacting CuSO4.5H2O with KI and Na2S2O3 in de-ionized water. A series of decanting and centrifugation is carried out to extract the crude CuI. Crude CuI was later purified by dissolving it in hot KI solution. The solution was later transferred into de-ionized water and placed in an ice bath to allow for re-precipitation

Barium Swallow A barium swallow is an X-ray test. It is used to check your throat and the tube that food goes down when you swallow it (esophagus). For this test, you will drink a white liquid called barium. The barium shows up well on X-rays and helps your doctor see problems. BEFORE THE PROCEDURE • Follow your doctor's instructions about limitations on eating or drinking. • Ask your doctor about changing or stopping your normal medicines. This is important if you take diabetes medicines or

1. Introduction Barium is a dense alkaline earth metal in Group IIA of the periodic table that occurs in nature as a divalent cation in combination with other elements. Gamma radiation is best absorbed by dense materials consisting of heavy atoms such as lead and barium [1]. Two commonly found forms of barium are barium sulfate and barium carbonate, often found as underground ore deposits. Shielding aprons manufactured from environmentally-friendly barium sulfate as a potential substitute for the

My element 's name is Barium; the origin of Barium 's very direct name is from the Greek word “Barys,” meaning heavy, due to it 's high density. The Chemical symbol that represents Barium is “Ba,” and the reason from it 's choosing is due to the Perdoic Table using the first and second letter of an element if the very first letter has been taken (Although, some elements are Greek, Latin, etc). Barium is found on the Earth 's crust in with familiar minerals such as Aragonite, Calcite, Chalk, Limestone

Purpose: The purpose of performing the 2 gram lab was to obtain 2.00 grams of our solid product, barium sulfate. In order for barium sulfate to be a product, we decided to perform a double replacement reaction. Background: In order for barium sulfate to be a product, we decided to perform a double replacement reaction. A double replacement reaction occurs when two compounds with two elements in each compound combine. After they combine, the first element in the first compound combines with the second

ACIDITY TEST INTRODUCTION: Acidity is the total amount of hydrogen ion present in the food sample with the expectation of those bound to alkaline ions. The hydrogen ion can be either attached to acids or in the form of free ions or anions. Titratable acidity is different than total acidity although at times both terms are used to mean the same thing total acidity is the total amount of organic acids in the food sample. This all acids (tartaric, oxalic acid, citric acid, sulfuric acid, lactic acid

insoluble sulfate using Barium Nitrate. This was done using Barium Nitrate(Ba(NO3)2) with Sodium Sulfate(Na2SO4) to produce Barium Sulfate(BaSO4) and Sodium Nitrate(NaNO3). The reactants were measured to get the needed mass of each, and then were dissolved in water within separate beakers. After the reactants were added to each other, the reaction occurred, and a centrifuge was used to separate the products. The end result of the reaction was 1.2 grams of the solid, Barium Sulfate, left inside the

In this experiment, the elements copper, cobalt, barium, sodium, lithium, and strontium were burned to see the colors which they produce. Each flame was a distinct color and burned at different speeds, meaning that my partners and I had to repeat the step of burning the element several times in order to get precise results. The experiment was mainly conducted to see the light spectra that the colored flames cast, and to become acquainted with using spectroscopes. One of the elements used in this

After identifying the first cation, the following procedures identified the second cation, which was barium or calcium. The second cation was identified by using the liquid portion of the solution mixed with hydrochloric acid and separated from the white precipitate, silver chloride after being centrifuged. Ammonium carbonated, which serves as to help confirm the presence of either barium or calcium cation, was added and stirred to this existing solution, causing the solution to become cloudy and

Conclusions The experiment contained six ionic aqueous compounds that reacted and formed new products. The reactants were barium chloride, potassium nitrate, silver nitrate, sodium carbonate, calcium sulfate, and sodium phosphate. In Station 1, barium chloride and potassium nitrate did not react. Barium chloride and silver nitrate created aqueous barium nitrate and the precipitate silver chloride. In Station 2, potassium nitrate and silver nitrate did not react. Potassium nitrate and calcium sulfate

Zinc reacts with copper (II) sulphate to produce zinc sulphate and copper. As zinc is placed higher than copper in the electrochemical series, zinc is more electropositive than copper. Thus, the black zinc metal dissolved indicates that zinc ionizes to form zinc ions and displaces the copper (II) ions from 1 M CuSO_4 solution. The reddish-brown precipitate formed indicates copper is deposited after displaced by zinc. At first, the blue colour of 1 M CuSO_4 solution indicates the presence of copper

phosphate and barium chloride dihydrate was added to water producing a mixture containing a solid precipitate of barium phosphate. Through the use of filtration, the precipitate was removed from the mixture completely. The filtered liquid was transferred into multiple test tubes, each test tube had either barium chloride or sodium phosphate added into the liquid. The chemical that caused a precipitant to form was determined to be the limiting reactant. The filter containing the barium phosphate that

conducted in order to see the interaction between the cations and flame. Based on the flame test and table 5 the possibilities were barium and copper. Copper reacted with fire to form a green color with blue edges. The barium produced a yellow- green color. We know that the solution can not contain barium because previously it was said that sulfates are soluble except when barium is present. The unknown was soluble meaning that barum couldn't be part of the components on the

Procedure 1. Put on safety goggles before touching anything to prevent any eye injuries. 2. Mix barium chloride (BaCl2) and potassium nitrate (KNO3) by putting 2-3 drops of each into a compartment in the compartment container. 3. Observe the result and mark down any important details or happenings. 4. Wash out compartment container to mix 2 other compounds. 5. Repeat steps 2-4 for the following compounds: barium chloride (BaCl2) and silver nitrate (AgNO3), potassium nitrate (KNO3) and silver nitrate (AgNO3)

in skin burns, ulcerations, and respiratory irritation. If there is contact with the chemical rinse the affected area, get medical attention immediately. Silver Carbonate: Not very hazardous with skin and eye contact (irritation). Non-hazardous. Barium Chloride: Slightly hazardous in case of eye and skin contact. Sodium Phosphate: Slightly hazardous in case of eye and skin contact, rinse with soap and water for skin contact. Calcium Chloride: Hazardous in case of eye and skin contact, in case of

CH 204 - Introduction to Chemical Practice Experiment 2 - Qualitative Analysis of Cations Petra Hsia Stefi Hsia TA: Joey Gurrentz February 8, 2018 RESULTS & DISCUSSION In Part A of the experiment, the presence of silver was confirmed by the "Unknown 4" substance. It was discovered with two rounds of testing. In the first round, two drops of 6M acetic acid and 4 drops of 1M K2CrO4 was added to the "Step 6" test tube, the solution turned a yellow-orange color. Because there was no formation of yellow

splits into Barium-141, Krypton-92 and 3 Neutrons. This is only the very start of a certain scenario that could occur with the fission of Uranium-235. This model does not show the different scenarios that could occur, the size of the reaction, the size of the atoms, the size of the space between the atoms and particles, the speed of the particles and atoms, the possible directions of the atoms and particles and other minor details. Uranium-235 does not have to split into Krypton-92 and Barium-141 it

This was shown to have a sensitivity of 92 percent compared to videoflouroscopic modified barium swallow. The Gugging swallowing screen(44) is a scoring system consisting of preliminary part and direct swallowing test. In the direct swallow test, several considtencies are used like solid, semi-solid and liquids. The scores range from 0 to 20

“metallic zolt” to relate to the reader the excitement she felt while eating them. Then, later in the book when she is around thirteen, Julie drinks a barium solution at the doctor’s office to help highlight her digestive track to see if there are any problems. She describes this experience as torturous, and remembers the taste of matches while drinking the barium. She

complete this, a chemist requires a balanced equation that states the exact amounts of reactants required to produce an exact amount of a product. In this particular lab, the insoluble barium iodate Ba(IO3)2 is produced by the reactants barium chloride and potassium iodate. the balanced equation to produce insoluble barium iodate is Ba^2+(aq)