An Alka-Seltzer tablet was accurately weighed and recorded using a weighing boat and analytical balance. A fragmented piece between 0.2100g and 0.2800g was also weighed and recorded. 500mL of water was placed in a 600mL beaker. 80mL of water was then mixed with 20mL of 6M HCl in a 150mL beaker to create 1.2M HCl. A 1.5g piece of Alka-Seltzer tablet was then added to the HCl solution. After complete evolution of CO2, gravity filtration was used to catch all of the starch produced from the reaction. The buret was filled with the filtrated solution and the glass tube end of a rubber tube was inserted about 2 inches into the mouth of the buret. While keeping a finger over the buret mouth, the entire buret was quickly inverted and the tubing and mouth completely submerged into the water in the 600mL beaker. The buret was then clamped into place while double checking the buret mouth was under the water level and the rubber tubing was not pinched. The stopcock was then opened extremely slowly until the water level in the buret dropped close to the 50.00mL mark. This level was then recorded.…
First, the unknown sample from experiment 2 was boiled with just enough water dissolve it completely. After all of…
Sodium Bicarbonate also referred to as baking soda, Bicarbonate of soda, Sodium hydrogen carbonate, and Carbonic Acid Monosodium salt, acts an ionic or salt compound when put in an aqueous solution. Its molecular weight is 84.006 g/mol and it is usually found in a dry powder form that is similar to slat. It is white, odorless, and has a melting point of 108.9 degrees Celsius. It has a density of 2.1 g/cm3.…
Solubility is the amount of solid that can be dissolved in a certain amount of liquid at a certain temperature. In order for solubility to be tested, two trials were run. 5 mL of deionized water was measured and poured into a beaker. The temperature of the water was recorded. 2 grams of the unknown was measured out and placed into the same beaker as the deionized water. The unknown and water was then mixed well until the unknown was fully dissolved. Once the unknown was fully dissolved, small amounts of the solid unknown was then measured and mixed into the solution until the solution was either cloudy or had small amounts of solid unknown, unable to dissolved, at the bottom of the beaker. The solubility was then put into terms of moles per liter. Enthalpy change is the amount of heat that is released or absorbed in a chemical reaction at constant pressure. For enthalpy change to be calculated, 30 mL of deionized water was measured out and put in a coffee cup calorimeter. The initial temperature of the water was record. 1 g of the unknown was measured out. Fairly quickly, the unknown was added to the water and stirred. The LabQuest pad measured the change in the temperature of the water as the unknown was dissolved. Once 90 seconds had passed the heat trend was observed from the reaction. The enthalpy was calculated by using the formula, ∆H= c∙m∙∆T. The enthalpy change…
“That seems to be about all any of us knows,” Charley said. “For your next assignment,” Charley continued, “I want you to find out what each of the ingredients in these drinks is and what it does for a runner or for a non-athlete. You need to be very accurate in your analysis—determine what each component really does for the body, not what the marketers want you to believe it does. Then look at the marketing claims of some of these drinks and see if the scientific facts match up to them. Many of our readers are using…
1. The two factors I compared were the temperature of the water and the Alka-Seltzer. I chose these factors because I was able to see the difference in liquid temperature in dissolving the tablets.…
Table 2 demonstrates the similarity between the value of the sum for Reaction 1 and Reaction 2’s change in temperature, compared to Reaction 3’s change in temperature. Reaction 1 was the dissolution of solid sodium hydroxide in water with a ΔH°rxn of -47047 J/mol, Reaction 2 was the neutralization of liquid sodium hydroxide with HCl with a ΔH°rxn of -31289 J/mol and Reaction 3 was the dissolution and neutralization of solid NaOH with HCl with a ΔH°rxn of -91000 J/mol. Consequently, the sum of Reaction 1 and Reaction 2 was -78336 J/mol, similar to the ΔH°rxn for Reaction 3. Table 2 displays the percent error of the experiment in comparison to the theoretical values, representing that this similarity in values should have been closer; while the…
On our first trial, we only put in blue, green, red, and yellow mixtures inside the test tube. Before we even put in the orange solution, the yellow liquid started to mix in with the red solution. It meant that the yellow sugar water was more dense than the red sugar water. On our second trial, we tried to put the green mixture first to see what would happen. When we put the green mixture inside the test tube, we decided to experiment and put in the yellow solution. The second we put the yellow mixture in, it immediately mixed in with the green. This proved to us that the yellow mixture was more dense than the green mixture. Next, we tried to put the blue solution first, the green solution second, the red mixture third, the yellow mixture next, and the orange sugar water on the top. The test tube started turning a dark purple color. The orange was more dense than most liquids. Then, we tried blue, green, red, and orange. The red and the orange mixed and the mixture turned black. On our final trial, we did blue, orange, green, yellow, and red. The sugar waters did not mix in this order. The blue was the most dense. The orange was not as dense as the blue, but was more dense than the green. The green was more dense than the yellow, but was not as dense as the orange. The yellow was not as dense as the green, but was more dense than…
Before any of the Alka Seltzer is added to the water all the pressure inside of our rocket is equal which means there is equal pressure on the outside and inside of the rocket, and once the Alka Seltzer enters the water the pressure in the rocket becomes more than the outside pressure. Alka Seltzer has a certain combination of medicine so that you can treat symptoms such as heartburn, upset stomach, or indigestion, The ingredients included in Alka Seltzer are aspirin, sodium bicarbonate, and anhydrous citric acid.…
One Alka-Seltzer tablet was weighed on the analytical balance. Then a piece was measured out to be between 0.21 and 0.28 grams. 500mL of distilled water was added to a 600mL beaker. 80mL of water was mixed with 20mL of 6M HCl in a 150mL beaker. A 1.5g piece of Alka-Seltzer was added to this mixture and all CO2 was allowed to escape. The mixture was filtered then added to a 50mL buret until full. The glass tube end of the rubber tubing was inserted about 2 inches in to the buret. Using a finger to cover the mouth of the buret, it was quickly inverted and placed into the water in the 600mL beaker. The water level was brought to 50mL by carefully adjusting the stopcock.…
MANAGEMENT 210 Table of contents EXECUTIVE SUMMARY---------------------------------------------------------------------page 3 INRODUCTION--------------------------------------------------------------------------------page 4 INTERNAL ENVIRONMENTS---------------------------------------------------------------page 5 EQUIPMENT-----------------------------------------------------------------------------------page 5 to page 6 TECHNICAL FACILITIES----------------------------------------------------------------------page 6 ORGANIZATIONAL CULTURES------------------------------------------------------------page 7 to 8 MANAGEMENT SYSTEM-------------------------------------------------------------------page 9 FINANCIAL MANAGEMENT---------------------------------------------------------------page 10 EMPLOYEE MORALE------------------------------------------------------------------------page 11 COMPETITION---------------------------------------------------------------------------------page 12 TRAINING---------------------------------------------------------------------------------------page 12 EXTERNAL ENVIRONMENTS---------------------------------------------------------------page 13 POLITICAL FACTORS-------------------------------------------------------------------------page 14 to 15 ENVIRONMENTAL FAVTORS---------------------------------------------------------------page 15 to 17 SOCIAL FACTORS------------------------------------------------------------------------------page 17 to 19 TECHNOLOGICAL FACTORS----------------------------------------------------------------page 20 to 21 ECONOMICAL FACTORS---------------------------------------------------------------------page 21 to 22 LEGAL FACTORS-------------------------------------------------------------------------------page 22 to 23…
Annual consumption of meat in Mongolia is about 6-8 million heads of livestock. We produce 200-250 million tons of meat and fully supply our meat demands through our own domestic production. 30 percent of the net meat sale is comprised of beef, 40 percent is of lamb, 10 percent is of goat meat, and about 15 percent is of horse meat. The production of pork is relatively underdeveloped; we produce about 200 tons of pork per year, which is not sufficient enough to meet the demands of our processed meat production.…
In the experiment, the students observed the solubility and miscibility of some substances. Table 1 and 2 shows the solubility of salt, iodine, sugar, and naphthalene in different solvents. Table 3 and 4 shows the miscibility of substances to other liquid substances.…
How did the amount of Sodium Citrate, an anticoagulant, added to a Calcium Chloride solution affect the volume of the clots formed when a sodium alginate solution, a blood simulation, was introduced?…
In the fungal part of Kombucha community, yeast species that dominated were Zygosaccharomyces bailii, Saccharomyces ludwigii, Schizosaccharomyces pombe and Saccharomyces cerevisiae; others varyingly include, Kloeckera apiculata, , Brettanomyces bruxellensis, B. lambicus, B. custersii, Candida stellata , Pichia fermentans and Torulaspora delbrueckii (Mayser et al., 1995; Liu et al., 1996; Balentine et al., 1997; Markov et al., 2001; Ramadani and Abulreesh, 2010), Saccharomyces bisporus (Markov et al., 2001) and B. claussenii (Jayabalan et al., 2008). The Kombucha microbiota has shown a greater fungal diversity in the sequence- based analysis of various cultures (Marsh et al., 2014).…