The hypothesis for the experiment was if the type of wax being used in the candles are different, then some candles will burn longer than other candles made with different waxes, because different waxes burn at different rates. The evidence that was collected in the experiment accepted the hypothesis because if both trial one and two soy candles were left to burn until there had no mass left, they would be the fastest burning candles. The trial one candle would have taken 148 minutes at 0.06 g/min, or 2 hours and 28 minutes. The trial two candle would have taken a similar amount of time with 150 minutes at 0.06 g/min, or 2 hours and 30 minutes. Another piece of evidence from the experiment that accepted the hypothesis was if both trial one and trial two beeswax candles were also left to burn until there was no mass left, they would be the slowest burning candles.
We also could’ve tried to make sure that there were no errors during our experiments. An error that we had is that the length of time that the candle(s) went out and measuring the height of the temperature wasn’t always the same. That means that the water could’ve went down in that time. The bubbles that were in the liquid after it rose in the lid definitely could’ve affected the height of it. Each time we started the experiment, we should’ve checked to see if the height of the starting liquid was the same.
They react with oxygen naturally in the air to make heat, light, water vapor, and carbon dioxide. 3 The amount of heat given off by this combustion reaction is roughly one-fourth. It takes a few minutes for this combustion reaction to stabilize when you first light a candle. Once the process is stabilized, the flame will burn with ease in a dewdrop shape, giving off water vapor and carbon dioxide.3 History of Candles Candles have been used for light and to brighten humanity 's celebrations for more than 5,000 years, but there is limited information about their descent. The Egyptians were using wicked candles in 3,000 B.C., but the Romans are usually credited with developing the wicked candle.
We then slowly added 25ml of chilled deionised water to the filtrate to initiate crystallization by using a measuring cylinder and a dropping pipette, once we had done this we left it for about 10 minutes to allow crystallization at room temperature. We then weighed a filter paper which we will use later in the experiment. We then collected the crystallized acetylsalicylic acid by vacuum filtration in a Buchner funnel and washed the product with a little ice-cold water. We then pre-weighed a clean, empty watch glass and labelled it with our initials and the date, we did this do we could easily identify that it was ours when we go to weigh it with the crystals on. We
The hypothesis proposed that if the leaf disks were put in solutions that are at different temperatures, then the leaf disks in the warmest solution would produce oxygen the fastest. The data revealed that there is great support for this hypothesis. The data showed that the solution with all ten of the leaf disks floating in the least amount of time was the 38°C solution which was the warmest. In contrast the solution that had the least amount of leaf disks, about seven and a half leaf disks, was the 7°C solution which was the coolest. The control solution had the second most leaf disks, on average, floating at 20 minutes.
The green represents control or Jar 1, the orange represents the smaller jar or Jar 2, and purple represents the larger jar or Jar 3. EVIDENCE FOR COUNTERCLAIM: However, it could be the amount of air exposure that affected the population and not jar size. Jars 1 and 2 had the same amount of air exposure, and their populations remained more similar than Jar 3 throughout the experiment. On the other hand, Jar 3 had about 2 more days of air exposure than the first 2 jars, which may be why Jar 3’s population was so high. This is also supported by the fact that in the late stage of the experiment, the jars had been covered for so long, and that could be why the populations decreased so significantly.
Celery started with a pH of 6.05 and dropped down to a pH of 5.03 after 30 drops that is not nearly as drastic as alka seltzer. But, it shows how celery does not have a buffer because of the drop in pH and is not able to create more hydroxide ions when acid is added. Liver started with a pH of 6.50 and after 30 drops the pH dropped down to 6.03 which means the drop in pH is only .47 and looks similar to the data of the positive control of alka seltzer. The data in this lab follows the hypothesis of testing the HCI of liver and celery, then liver will contain a buffer and celery will not. This conclusion can be drawn because of celery’s large drop in pH and the data’s resemblance to the water data meaning celery cannot hydrolyze ions and keep a constant pH.
The experiment that was done was to figure out “Does the amount of calcium chloride affect the temperature of water?” For the procedure, the experiment asked to record the initial temperature of 75 mL of water. The first trial said to add zero scoops of calcium chloride and stir for two minutes to record the temperature. Once the first temperature was recorded, it must be written from the difference between the initial temperature and the new temperature. Next, it asked to add one scoop of calcium chloride and stir for two minutes and record. Lastly, it told us to repeat the same steps until we had three calcium chloride scoops in the beaker and repeat for two more trials for accurate results.
Using the lit tea light, like a bursen burner, I flamed the mouth of the S. epidermidis culture. The sterile cotton swab was inserted in the S. epidermidis culture and twirled around to obtain a specimen. The entire plate was inoculate with the swab from top to bottom, to achieve a lawn of growth. The dry forceps was used to remove the antibiotic disk into the appropriate spot on the plate. This process was repeated for the all antibiotics with aseptic technique being used.
The combinations included 2× yeast; 1× sugar, 1× yeast; 1× sugar and others. The controls were set up in the same ways except some lacked either sugar of yeast. Others had double the amount of yeast with no sugar and double the amount of sugar with no yeast. This was set up to monitor the differences. After all this setup rubber stoppers were put in the fermentation tubes and the baseline was marked.
32 100 μL of afore-prepared sample solution and the mixed reference standard were diluted 100 times with ethyl acetate. 50 μL of these dilution solutions were separated on the TLC plate coated with SNISG. The plate was developed with petroleum ether: ethyl acetate (4:1) and the movement of solvent was usually controlled at 1 cm from the upper edge. After completion, the plate was dried until no solvent smell remained. It was sprayed with an ethanol solution containing 10% sulfuric acid, and heated at an infra-red drier until obvious color came up, as shown in Fig.2 (B.ab).
Along with being healthier, Melaleuca’s product was more cost effective. The Freiburg Study proved Melaleuca’s Peak Performance Pack showed to be very effective showing results within 1 hour of dosage and significant results after 12 weeks of
In the experimental tobacco group we added the same amount of substances only difference was 50 microliters of tobacco extract was added to the mixture. We then obsevered the two slides for number of cells as well as for food vacuoles inside a cell using a microscope at times of 0,5,10,20, and 30 minutes. Results The following graphs show the results of this experiment. The tetrahymena sample that was introduced to concentrated tobacco had a lower cell/vacuole ratio than the tetrahymena sample that was not exposed to