Introduction 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
DUI ANALYSIS REPORT Introduction: long ago the government banned the ability to make alcohol. This has caused a huge uproar which then people started to boot legging, as more and more people started to drink in the safety of their own homes. After the government saw how people were protesting this new law, they decided that they should left the ban. Since then people were able to drink in public, which in return has created another issue, now that they are drunk at a bar, how do they get home. Rather than taking the safe option and utilize some of the state and local programs and call a tow truck, the Driver chooses to just drive how drunk. They think that it’s ok, since they do not have their full mind.
Aim To prepare and purify an ester: 1-pentyl ethanoate, using pent-1-ol and ethanoic acid. An annotated reaction showing this reaction is shown below:
Experiment 9-Dehydration of 2-methylcyclohexanol Name______________________________________________________________________ Lab Partner_________________________________________________________________ Lab Day and Time____________________________________________________________ Report appearance (Typed, on time, in order, presentable, complete) 1 2 3 4 5 Abstract 1 2 3 4 5 Introduction 1 2 3 4 5 Reaction Scheme and Curly arrow mechanism 2 4 6 8 10 Table 1 2 3 4 5 Experimental Procedure 1 2 3 4 5 Calculation (percentage yield and composition of isolated materials) 1 2 3 4 5 Results and The graph produced from the Gas Chromatography showed that a reaction occurred because there are peaks on the graph. Each peak represents a major product formed. Since there are two peaks on the graph 2 major products formed. The theoretical yield of the alkene mixture was 3.914 g; however, the actual yield of the mixture was 0.73 g. The percent yield for the reaction was 18.65%. Considering the percent yield, the reaction was not efficient. The difference in the theoretical yield and the percent yield is most likely due to the reaction incomplete reaction. Instead of distilling the reaction to completion, it was stopped after 3 mL of product was obtained. To improve the percent yield the reaction could be taken to closer to completion by continuing distillation past 3 mL of product formed. The low percent yield could also be a result of the extraction. When removing the liquid from the crystals product could have remained behind.
The ethyl (3-oxo-2,3-dihydro-4H-1,4-benzothiazin-4-yl)acetate 4C (0.05 mol, 14.37g) was warmed in a mixture of ethanol and DMF (1:2) to get a clear solution and was cooled to room temperature. A solution of KOH (0.08 mol, 4.81g) in water (10 ml) was added to this solution and the mixture was stirred for
For lab twelve, the molar mass for Isopropyl alcohol is 73.121g/mol. The molar mass for unknown sample is 107.01g/mol. The molar mass for Isopropyl alcohol and unknown sample would be different from true molecular weight because the liquid of Isopropyl alcohol is not completely vaporized in boiling water. There is small amount of liquid left in the Florence flask that affect the result of molar mass for Isopropyl alcohol to be different than the true molecular weight of Isopropyl alcohol. Also, some vapors could have escaped through the pinhole. Instead of making tiny pinhole in the middle of foil, I could have accidently make a huge pinhole that causes the vapors to escape easily and change the result of molar mass. Lastly, I only did one
In the experiment, our purpose is to determine the ethyl ester in an unknown whiskey. We will be using two methods; the first method is called solid phase extraction(SPE) which will be used to separate ethyl ester from whiskey. SPE is based on the selectivity of stationary phase, it will select our desired ethyl ester to stay in the syringe column, and let other molecules go through the column. The second method is GC-MS method, which will help us to identify each ethyl ester. Gas chromatography is based on the interaction between stationary phase and mobile phase, and mobile phase in this case will be ethyl esters. Different ethyl ester has different interactive ability with stationary phase. The bigger the molecule, the longer it will interact
Trial 3 of Ethanol had an error occur, during the experiment the flask fell over causing distribution and causing there to be less fuel burned. This trail was also the only outlier that was detected via using box and whisker plots which are found in the appendices whisker plot 1, 2, 3. Trail 4 in 2-pentanol also had its flask knocked over by the wind, this caused the same effect but not on a large scale to cause it to be an outlier. Another error that was detected in the 2-pentanol trails 8 and 9, this trails had weights that were less than the sprit lamp, this could have occurred due to equipment error (scales) or the reading of the measurement. Another factor that impacted the results is that the spirit lamp flame was not put off as soon
During alcohol fermentation, we were assigned a particular yeast strain/beer. Once have figured out which yeast strain/beer your TA assigned you, you needed to pipette 5-10mL in each test tube. We did three treatments with a control for each, which is a total of 6 test tubes. While you filled up your test tubes with beer, you could have had your beaker of water on the burner, waiting for it to reach 99 degrees Celsius. While I was waiting for the water to get to boiling point I placed a test tube rack into a tub to where I was able to create a hot bath. Carefully we ensured two rubber stoppers to one test tube that was in the hot bath and another on the control test tube. Once we have placed the rubber stoppers on the test tubes, open Logger Pro 3.9 to record the temperature at 0,5,15,and 30 minutes. After recording the pressure on our table, I used two different beer test tubes to test for pH. For pH I just spiked the sample with 2mL of acidic solution and then placed both tubs in the warm bath that has now cooled slightly. Then recorded the pH onto the table. But for aeration experiment I want to aerate your beer for 10 min before running. Start the aeration while working on the pH experiment. We used the warm bath to facilitate fermentation again.
Observations of imploding thin-shell capsules have demonstrated an increasing discrepancy between predictions from single fluid hydrodynamic simulations and experimentally measured fusion yield as the Knudsen number (mean-free-path over system size) is increased. (-- removed HTML --) (-- removed HTML --) 1,2 (-- removed HTML --) (-- removed HTML
Final Lab Report 2 Sean Griffin CHM 2045L Imalka I. Introduction Background: Quality control is an important aspect of science and impacts life for average Americans daily. Just about every manufacturing facility used quality control, including medicine, food, and cosmetics. Quality control is used to determine if a product, like food contain what they say they do. For example, a company claiming to make healthy food may understate the amount of high fructose corn syrup (sugar), but if quality control happens then the contents will be revealed accurately.
There is considerable interest in predicting the permeability arising from the detonation of explosives emplaced in low permeability geological formations. These predictions would be useful for applications such as hydrogeology (Sarbhukan, 1990), massive explosive stimulation of tight gas reservoirs (Li and Xue, 2000), shale gas formations (Guo et al, 2014), coal gasification (Zhu et al, 2013), stimulation of geothermal reservoirs (Austin et al, 1973), and fracturing oil shale with explosives (Miller and Johansen, 1976). It is well known that energy released during blasting causes damage in the surrounding rocks in the form of micro to macro cracks, which increases the permeability of rocks. It is therefore of prime importance in reservoir
which would have only surface-seeded cells. The well plate was wrapped in Parafilm to prevent
Surface modification of UV-light sensitive Na-K2Ti6O13 photocatalyst with Cu(II)-nanocluster for efficient visible-light-driven photocatalytic activity Azam khan a, Umair Alam a, Danish Ali a, Detlef Bahnemann b, M. Muneer a,*
Abstract— A compact frequency reconfigurable slot antenna containing A U-shaped slot with short ends and an L-shaped slot with open ends are engraved in the ground plane to realize dualband operation By implanting 2 PIN diodes in tothe slots,accesible reconfigurability of three frequency bands over a frequency ratio of 2.62:1 can be achieved. For reducing