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. Our
Introduction A candle is a lightsource now mostly used for decorative and ceremonial purposes. It consists of wax, tallow and similar slow burning material. Candles are usually made in a cylindrical form but can be made with fanciful designs, enclosing and saturating a fibrous wick (Britannica School, Candle). A candle, when in use, burns when the heat from the flame liquefies the wax near the base of the wick.
TLC was used to identify the actual unknown product as well as other products/reactants present in the filtered solution. The procedure was conducted by placing a TLC plate in a developing chamber that is filled with a small amount of solvent. The solvent cannot be too polar because it will cause spotted compounds on the TLC plate to rise up too fast, while a very non-polar solvent will not allow the spots to move. The polarity of the spots also determines how far it moves on the plate; non-polar spots are higher than polar ones. After spots on the TLC form, the Rf values are calculated and used to analyze the similarity of the compounds.
The final product weight for percent yield was only the solid E product, which missed one half of the final product produce. If both products were weight, the percent yield would have been larger that it was. Instead of 22.33%, it could have been 44.66%. To prove that both products were obtained, but only one of the two products was analyze, a TLC plate of the DCM layer, that contains both products, and of the final product, was obtain.
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.
The percentage yield was a yield of 110% of the sodium acetate. A source of error that was made during this experiment was the transferring of the baking soda to the flask some of the dissolved baking soda might have still been in the beaker after it was pouring into the flask. A solution to this error would be to have better skills or to have tried to get out a much of it as we could by getting a tool to try and scrape some of it out. Another source of error that was made during this experiment was the measuring of the baking soda, so it could have been more exact. A solution to this error would have been to use more precise scales like scales that measure to 3 decimal places rather than to 1 decimal place to get a more exact value instead of a less accurate measurement.
The central purpose of this experiment was to determine the experimental empirical formula of an oxide of magnesium by performing a synthesis reaction. It was hypothesized that the formula that was derived from the recorded data would be identical to the theoretical empirical formula. After performing calculations with the data that had been collected within the duration of the experiment, it was deduced that the empirical formula of the product generated by the synthesis reaction was Mg5O6. Since the calculated formula did not match the postulated formula, MgO, the inceptive hypothesis was confuted. There was a large discrepancy in the results of students who replicated this experiment, the variation in data possibly having been evoked by the dissimilarity in
Once iodine was dropped onto the circle, which was labeled “HCL+ saliva”, was divided into two colours, white and navy blue, this arose because the starch did not get broken down. The enzyme got denatured with the extension of hydrochloric acid of hydrochloric acid. The acid found in hydrochloric acid obtains a low level oh pH (2), causing it not to be broken down, rather to be denatured, confirms amylase can’t continue it’s activity without a particular high amount of acid, (that is found in stomach acid). My hypothesis is incorrect due to the fact that my prediction is
What is the longest you have gone without sleep? Sleep is a natural period of suspension that our body uses to recharge and restore itself on a daily basis. A study shows that you can last up to 11 days without sleep. Everyone has different habits of sleep but, according to scientists we all need at least eight hours of sleep. In this essay, I will discuss how much sleep we need, how sleeping and not sleeping affects us, how you can catch up on lost sleep.
The type of board I will be using has a density of 100 kg/m but will retain the same thermal conductivity but using a different grade of polyurethane foam that has fire resistant properties. This type of insulation has a relatively high compressive and tensile strength but during its production it does give off quite large amounts of Co2 and does contain toxic materials that could prove to be harmful to the surrounding environment. Although more costly the insulation having a higher strength and fire resistance will ensure that less maintenance will have to occur and so could be less expensive long
However, the uncertainty that we encountered leads back to the accepted standard voltage (E knot) of 1.0-1.1 V. Our voltage range is a bit lower, but this uncertainty can be attributed to the lack of proper functioning voltmeters. Even though our second voltmeter seemed to be functioning properly, we can assume, based on my groups’ failure with our first voltmeter, that the other voltmeters weren’t functioning properly and can give a reading that is higher than what is expected. Despite our assertions, we are
In addition, when both elements were carried out, it was noticeable that each of the test tubes feels warm. This indicated the reaction is an exothermic reaction because it produced heat. The pH level for magnesium chloride solution was neutral (not basic because of oxide layer) but basic for calcium chloride. It can be seen that calcium is more reactive than magnesium. This was because the lower the elements are down a group, the larger the size of its atomic radii.
Collectivism, or group prioritized decision making, is widely regarded as a negative attribute when isolated. The world of Anthem is an example of a world based off of collectivism, where the most recent technology developed is a candle, which recently replaced torches. The world is undeniably primitive in some areas, but is clearly not in others. Almost all economic and social aspects of the society seemed to have been developed years ago, yet almost no progress has been made in scientific areas. Science isn’t likely to be a large or common factor in collectivist societies, and scientific research has a positive correlation to technological advances resulting in the lack of development in technology.
The slightly negative end of another hydrogen chloride particle will become attracted to the other end of the particle which has a slight positive charge. Therefore the two dipoles will become drawn together because the electrons are not shared between the two particles of hydrogen chloride. The melting point of hydrogen chloride is -85.05 Celsius however water has a boiling point of 100 degrees. Therefore this proves that hydrogen bonding in water is more powerful than hydrogen chloride because water is more polar than HCL . Water has a higher boiling water because more energy is needed to break the water molecules apart in hydrogen chloride.