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. Liver’s pH only changed by .47 which is not a dramatic change and can fall within scientific error and strongly relates to the alka seltzer data. Which, leads to the conclusion that liver does contain a buffer and is able to keep the same amount of hydrogen when acid is added. In conclusion, celery does not contain a buffer to keep pH constant and liver does have a buffer and can hydrolyze
For quality testing purposes. For quality of bounce, ball was dropped 20 inches from base of table, and recorded bounce altitude from ruler that was held vertically. The elasticity of ball was measured and then followed by testing temperature change resistance by placing bouncy ball in 1° Celsius conditions and noting any physical or chemical change in bouncy ball. This was accomplished by placing ice in a 250ml beaker and temperature was measured with thermometer and when 1° Celsius condition were met bouncy ball was placed inside a beaker for about five minutes. Followed by testing a change in quality of bounce.
Diluents do not react in alkylation chemistry, but they take up space and decrease the effective area for isobutane and olefin to contact. With less contact, side reactions like polymerization are more likely to occur; polymerization reactions are a direct acid consumer. Comparing the FCCU and Coker BB, Coker BB contains far more contaminants and diluents than FCCU BB (see Table 2, pg.4). By lowering the amount of contaminants and diluents, acid consumption reduced 0.2
The purpose of this experiment was to find out if table salt, Epsom salt, kosher salt, or sea salt can be more affective in melting ice faster. After performing the experiment, my hypothesis that table salt would melt the ice cube faster than using kosher salt, sea salt, or Epsom salt was proven to be correct. The table salt took the least amount of time to melt the ice cube with an average of 24 minutes. Then came kosher salt with an average time of 31 minutes. Thirdly was the sea salt with an average of 33 minutes.
Once 3-4 readings for the solution were collected, the 2M NaOH was added to the solution. The lid was quickly replaced in order to prevent heat from escaping and not being recorded by the temperature probe. The cup was swirled until the temperature reached a peak and began decreasing. After the 180s had passed, data collection ended. The solution was discarded into the waste bin, and the materials were washed.
We had to refill the beaker which most likely caused the ratio of baking soda to water to be lowered. We then successfully finished the trial. We learned that light and the conicity of water are all contributing factors to how fast photosynthesis is done. This experiment was done but it did not turn out well. The whole class ended up redoing the experiment and the results above are those of the second experiment.
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. To sum up the experiment, it said to record the average change in temperatures to the class averages to graph a bar graph comparing both of the averages. That’s the procedure on how to conduct the experiment correctly. The averages that my group received for zero scoops were 0.5 degrees Celsius, one scoop was 6.5 degrees
This low percent recovery is because some of the solutions spilled onto the table, losing a lot of the precipitate. The recovered ethyl-4-aminobenzoate’s boiling point was within the accepted range of 85C; meaning, the amount recovered was pure. The % recovery for the benzoic acid was 5.33%. This low percent recovery could be due to the fact that instead of adding NaCl to increase the precipitate amount, the salting out effect, more of the HCl was used. This caused the precipitate amount to increase slightly but not as much as it could’ve if the salting out effect was used.
It takes less energy to disrupt crystal lattice when impurities are present given that it makes the melting point become lower and broader. During recrystallization, the trimyristin was lost because the sand bath was used to dissolve the solid and acetone was used to purify the impurities and since acetone has a low BP, the more heat used caused the material to
After more than two hours, the whole food noodles were unrecognizable in the film given from the M2A feed whereas the ramen noodles were still distinct. These results were found in both trials, so she concluded that processed foods digest much slower than whole foods. She also
I thought as we shook the cube it would just crumble into little bits. As we shook the first cube for 3 minutes, the mass decreased from 2.35g to 1.42g. During test 2, we shook and received a 1.64g, after the starting total of 4.7g. For the final mass we got 1.99g, a total of 5.06g grams turned into sugar dust. Our graph was almost a straight line.
Our 2nd and 3rd trials which had 1 and 2 paperclips caused our time to decrease to 1.6 and 1.8 seconds. Our last trial with the most mass of 3 paper clips lasted the shortest amount of time, only 1.43 seconds.Our responding variable was the time flown and the controlled variable was who threw the airplane
The third instance is after the chain of dominoes collapse and send the marble rolling down the inclined plane. The speed of the changes the distance it will go, therefore it had to be the exact acceleration in order for it to land into the cup. Negative Acceleration is shown when again in the pulley system whereby the string and force of the cup the second cup is pulled up as the same direction of the nvelocity. It then slows down showing two indications of a negative
My group’s hypothesis was that the sugar cubes would break up. The mass of one sugar cube was originally 2.35 grams. After it was shaken by all three of us for three minutes, it’s mass was .96 grams. Our data cannot be used for everyone, however. How rapidly, strong, and fast you shake can make a difference.
But, in the case of speed of tarnishing between the two elements, potassium was faster than sodium. It dissolves completely in water quicker than sodium. Alkali metals tend to react violently or explosively with the water; however its reaction with methanol is gentler. The reaction of sodium or potassium with methanol caused a fizzing (gas released) until the metal