One thing that definitely went wrong in the lab was that we had to round about two of our measurements and the reason being was that they were exact. To exemplify, when we were reading the volume for the finishing measurement of the base for trial three, we got exactly 45.00 mL. The only problem was that, we had didn’t really have the two significant decimal numbers. Hence, we rounded our volume to 45.01 mL. Also, we got exactly 23.00 mL for our finishing volume of the acid for trial three. Therefore, once again we rounded it to 23.02mL in order to get at least two significant decimal numbers.…
This means that the unknown compound does conduct electricity. The compound was tested and had a pH of 5. This means that the compound is acidic according to the pH scale. Being acidic means that the substance has more hydrogen ions than hydroxide ions according to “pH”3 .The chemical and physical properties are stated in Table 1.…
Gram Negative Unknown Lab Report #20 BIOL 3444-008 Giang Nguyen TA: Malini Kotak 11/05/2014 Abstract The experiment is conducted in order to identify a randomly given unknown gram-negative microorganism. By comparative analysis of biochemical tests that were performed throughout the semester to find out its characteristics and determine the identification of bacterium out of four potential unknown was given. To figure out the characteristics, T-streak was performed to isolate the sample from broth to a Tryptic Soy Agar plate, along with an additional slant in case something wrong with the original plate that can possibly affect the result.…
Introduction An Alka seltzer is a Blood thinner and a nonsteroidal anti-inflammatory drug that can treat pain, fever, headache, and inflammation. Its two main ingredients are citric acid and baking soda. When the tablet is dropped in water, the citric acid and baking soda react, which causes the alka seltzer to dissolve. If an alka seltzer is dropped in orange juice, then it will dissolve quicker compared to water because the orange juice has a higher level of acidity.…
Analysis of Galvanized Nails, Quality Control, and Green Chemistry Introduction: In this lab, we handled acidic chemicals that needed to be disposed of upon completion of the lab. We disposed of these chemicals according to safety policies and green chemistry policies. Green Chemistry is the practice of chemistry in an environmentally safe way to prevent pollution. We used green chemistry to minimize the amount of waste we were to be creating.…
CORRECTIVE ACTION PLAN The laboratory’s proposed action and activities already taken to the noted deficiencies are noted below. Item 1. Chain of custody (COC) G1505428 did not list the requested parameters for analysis. The sample had been in house for several weeks and had not been through the laboratory's second level review process at the time of the inspection.…
“See if you can guess what I am now … I’m a zit. Get it?” - Bluto Background: The purpose of the antiseptic lab was to show the effectiveness of multiple antiseptics: hydrogen Peroxide, Purell hand sanitizer, Water and Iodine.…
Re-pour the known solutions into 12 new test tubes and use the pH meter to find the value. To use the pH meter turn on the device and place the probe into the substance, wait for the value to become stable and record. Identify if the 12 know substances are acidic, basic, or neutral. The experiment C effect of buffers on pH can be done using the red cabbage indicator or the pH meter.…
Parana Pine: For the Parana Pine I obtained the published value from a website since the values on the lab sheet didn’t have a values for Parana Pine. Firstly, I calculated my own Young’s Modulus Value with the result got from the tests using the equation for Young’s Modulus in Bending: E= l³/(4bd^3 ) x ( Δw)/( Δx) From using this equation, I achieved 14.44 E/GPa as a value, the published value, was: 11.37 E/GPa found on ‘The Wood Database’. The difference between my results and the Published values is: 3.07, and it was still within the range of the published value. Regarding the accuracy of the test, since this was my first time conducting this type of test, there may have been some mistakes I made that could have affected the results…
1) Based on the results from Lab 5A and the “Your Disease Risk” website, describe your risk of developing heart disease. What factors put you at risk for heart disease? (3 points) My results revealed that I am at low risk for developing heart disease. Although I know I am at low risk I still have some bad habits that put me at risk.…
During our experiment, we had a hard time measuring the conductivities of the solutions in the beaker, because the Vernier LabQuest readings didn’t’t always give us an exact number. The readings of few tests kept running, so we ended up estimate a number for the conductivity. But these errors didn’t’t really affect our experiment that much. A future experiment could test the pH level in the…
Introduction Density measures the volume that a given amount of mass takes up. Usually, density has grams per unit volume as a unit. To find the density of an object, the object has to be measured and its mass has to be divided by its volume. Often times, density is used to identify substances, since different elements have specific densities. This experiment is made up of two sections; the first section measures the density of water and the density of an unknown substance.…
Determining The Process of Photosynthesis And Cellular Respiration Using Elodea and Yeast Introduction Photosynthesis is an essential process to life on earth, in which plants and other organisms use sunlight to create food from oxygen, and carbon dioxide. Cellular respiration is when energy in food is released and converted to ATP, which is then used as chemical energy to complete tasks within a cell. This process usually requires oxygen and releases carbon dioxide. Photosynthesis and cellular respiration are similar in some areas and different in others. The purpose of both of the process is to produce energy, but they have different ways of achieving this goal.…
Discussion Graph 1 displays the reaction time (in minutes) of how long it took for the Alka-Seltzer tablet to completely dissolve per trial. Graph 2 displays the averages of the reaction time which showed the higher the water temperature is, the faster the reaction time would be. At 65⁰C the average time for the Alka-Seltzer to completely dissolve was 1 minute 4 seconds followed by 1 minute 20 seconds at 35⁰C and ending with the highest average at 2 minutes 1 second (1.61). The hypothesis stated that hot water temperature would make the Alka-Seltzer tablet dissolve the fastest.…
The list of errors start from the beginning of the experiment. Although the numbers seem to be close to the actual values, there is still room for error with the numbers. What the class noticed first is that we could have been working with very impure benzoic acid. The benzoic acid we were given was made by the 102 chemistry students, meaning that it wasn’t properly made. Students have said that they were rushed and weren’t able to take their time to filter the solid out of the solution.…