One error that could have affected the percent yield is not filtering out all of the liquid from the filter paper in the funnel before setting it off to dry. This would have increased the final mass of the solid, not making it accurate. To stop this from happening again, the liquid could be drained more thoroughly until it fully stops dripping into the Erlenmeyer flask. Another error that could have affected the percent yield is the amount of trials performed. This would have made the results less accurate and made any errors change the final results even more.
Meth Mouth Meth mouth is severe tooth decay and tooth loss, as well as tooth fracture, acid erosion, and other oral problems, potentially symptomatic of extended use of the drug methamphetamine. The gums are red and swollen and the plaque is yellowish and white where its suppose to coat the teeth. Meth mouth just isn’t for people who use meth or are addicted to it, it use to be called that because people had poor hygiene and nutrition. Also, they had a lot of sugar in their diet intake. When people went to the dentist or doctor they had the pain in their gums,and when they got fevers and their inability to function started becoming too much they found out it was ca used by a condition known as Acute Necrotizing
The KHP and the acid samples must be dried, because there would still be extra water which would skew the molarity. The calculated molarity of the NaOH would be lower because there would be extra volume in the solution, but still the same amount of moles of NaOH, so the molarity would be less, and thus, will require more titrant in order to
12. The TLC data obtained is provided in a table below. The TLC data was conducted solely in a 9:1 hexane/ethyl acetate solvent solution as opposed to the 1:1 and pure hexane solution as well. This was due to the lack of time, but as explained in number 7, a very polar solvent (1:1 solution) or non-polar solvent (pure hexane) is not ideal when obtaining
This step affects the end result when weighing the precipitate because in the reaction, the Al3+ is the limiting reagent and is in a 1:1 stoichiometric ratio with the precipitate product. If the pipet is read too low, then the result would be an artificially low concentration because the mass would be lower. If the pipet is read too high, then the result would be an artificially high concentration because the mass would be higher. (3) On Day 3, if we did not rewash the beaker with DI water after initially pouring the solution into the crucible to be filtered, it would affect the final results of the experiment. If the beaker was not washed, not all the solution/precipitate would end up in the crucible/filtration system, which would mean a possible low reading on the mass and concentration of Al3+ because some of the precipitate would remain on the beaker.
Some factors that could have affected the experiments end result could have been through measuring the all the reactants and equipment their might have been an error somewhere there. Another factor that could have been is that the vinegar was a lower concentrated acetic acid and could have other components in it as well which could have ruined the end measurement of the final product by getting a heavier measurement that actually
Verna Wang Hannah Palmer CHEM 101-069 Lab 11-19-16 Stoichiometry and Limiting Reagents Lab Report Purpose: We are using the reaction of sodium hydroxide and calcium chloride to illustrate stoichiometry by demonstrating proportions needed to cause a reaction to take place. Background: Just like a recipe would call for a specific amount of one ingredient to a specific amount of another, stoichiometry is the same exact method for calculating moles in a chemical reaction. Sometimes, we may not have enough of or too much of one ingredient , which would be defined as limiting and excess reagent, respectively. Ideally, every mole of each reagent would be used up, and theoretical yield, we are assuming that every last mole of the reactants would
A larger sample size could have enabled averages to be resulted, and the experiment could have had several trials until concordant results are attained to increase the reliability. To enhance the accuracy of the results, a machine such as a cheese wire to cut straight along the edge could have been employed that would more accurately cut the cubes and hence reducing human error. This would be efficient as there is a large chance of human error when cutting the cubes by hand as the agar is slippery. Cubes with different sizes could be observed to improve the validity of the experiment. The weight of the bottom of the cubes pushing against the beaker likely caused an error to occur.
Substrate concentration basically means the amount used for the substrate. The substrate in our experiment was 0.1% hydrogen peroxide. The 0.1% is the concentration amount. Just like temperature and pH, substrate concentration can speed the reaction only up to a certain limit. When we mixed pH 3 enzyme tube with substrate tube, we used 0.3 mL of hydrogen peroxide, but if we were to increase the amount, then the experiment would have been faster.
Factors that contribute to dialysis are low blood pressure resulting in low blood flow to the kidneys. A reduced blood flow can cause damage to the epithelial lining of the tubules within the kidney and this hinders the filtration within the kidneys. Kidney failure will also cause a person to have to undergo dialysis. What are some dietary restrictions in dialysis? A patient must limit their fluid and sodium intake.