CHEM 1211 L Principles of Chemistry Lab 14 September 2009 Lab Report 3 Introduction The purpose of this project is to identify an unknown organic acid (X) by conducting various experiments to determine the acid’s unique properties. By determining selected constant properties of the unknown and then comparing these properties to the constant properties of known substances, it is possible to identify an unknown substance. The properties used to identify the unknown must be intensive
Calculating the size of really small molecules Purpose: Chemists can determine the size for molecules by various ways. In this particular chemistry lab we want to prove that we can find the size of one single molecule of oleic acid. Procedure: The point of this experiment is to find the size of an oleic acid molecule. In order to get used to the concept on how to do this we started off with a warm up activity. This warm up activity was to determine the thickness of a sheet of aluminum foil. Before
For part one of the lab the results obtained from experimental data illustrates that the titration was done accurately, because once the data was put into excel for graphing the titration curve came out the way it was suppose to. As far as part 3 goes, the buffering capacity of the addition of a strong acid and strong base to a buffered solution and an unbuffered solution results are as shown in the data table above. For the unbuffered solution, the measured pH was within range of the calculated
CHEM 51LC Page 1 Rev 04 /30 /1 3 C HEM 51LC E XP # 6 S PRING 201 3 S YNTHESIS OF A SPIRIN REACTIONS: Hydrolysis of an ester and esterification of an alcohol In Part A of this experiment, you will do a base - promoted hydrolysis of the ester in wintergreen oil to convert it into salicylic acid. Purity will be evaluated using melting point analysis. In Part B , you will esterify your newly generated salicylic acid usin g acetic anhydride to form acety lsalicylic
following is for those of you doing the LabPaq at home labs for CHEM 1212K. Please note that it is your responsibility to obtain the LabPaq as described on the home page and in course emails. The following will need to be completed on time to avoid penalties for late labs. Please note that you must order your LabPaq as soon as possible to meet the assigned deadlines. Late lab reports will lose 10% of the total possible points
Discussion questions In the lab we performed already, our objective was to create pie, column, and linear graphs. We were able to create the graphs by using the program Microsoft Excel. As we plotted the data into Microsoft Excel, we were able to choose certain graphs that were required to be use for the experiment. The further we got into the experiment, the more challenging it became to finish the steps, but the beginning of the experiment was fairly easy. Step 23 to be particular, was by far
LAB 5: Taking the A train Focus Question Amphoteric material can exhibit properties of a base as well as properties of an acid. In our experiment we combine Zinc and Iodine to create Zinc Hydroxide, which suppose to be Amphoteric. So in order to check if our substance is indeed amphoteric we will check its behavior when tested for Acidity and for Base. If in both case it will exhibit a positive results, we will reaffirm the assumption it is Zinc Hydroxide and amphoteric. Materials used:
Strickland Date: 3/7/2015 Instructor’s Name: Vimlarani Chopra Assignment: SCIE207 Phase 4 Lab Report Title: Exploring Endocrine, Circulatory, and Respiratory Systems Instructions: Your lab report will consist of the completed tables. Label each component of the endocrine, cardiovascular (circulatory), and respiratory systems and their functions in the following tables. When your lab report is complete, submit this document to your instructor in your assignment box. 1. Endocrine
reactants. The correct amount of product that can be produced is the smaller of the two values since that reactant limits the production of product. In this lab, the theoretical yield of the equation is found by using the type of stoichiometry problem mentioned above, and the actual yield is how much product is actually formed in the lab. The percent yield, a comparison between theoretical and actual yield, is than found using the equation: Percent yield = (actual yield / theoretical yield) X
this reaction as a lab. The main objective of the lab was to observe a reaction of Iron and Copper (II) Sulfate. This lab presented a good opportunity to work with numbers using moles and Stoichiometry. This lab was also good for practice using Bunsen burners, glass, and handling hot objects. Lastly, we got to witness and test the Law of Conservation of Mass through the reaction in this experiment. The list goes on, but these are just a few objectives from the recently conducted lab experiment. Background: