However, if the blunder were true, my data would have been completely wrong resulting in an incorrect graph and rate law for magnesium. Quantitative: Based on my calculations and the lab manual’s reasoning, the 50mL graduated cylinder had the greatest percent of uncertainty than that of the top balance scale. Top Balance Scale: (0.01g/0.45g) x 100= 2.22% 50mL Graduated Cylinder: (1mL/18.75mL) x 100= 5.33% This means that the top balance scale at a 2.22% chance of uncertainty and the
2. What effects might this steady increase of carbon dioxide have on the organisms living in this area? -As stated before, photosynthesis performers would not be effected, as the can take in carbon dioxide. Respiratory breathers, however, face a fatal issue with extra carbon dioxide in the air. The population of respiratory breathers will slowly decrease, considering plants will give a little bit of oxygen.
The dependent variables are the salt freezing, and the time it took to freeze. 2. The experiment’s hypothesis is incorrect. The lower the temperature, the less time it took for the water to freeze. Carmen believed that the more salt, the lower the temperature is.
The use of chemicals in the hydrofracking process and the energy needed to operate the trucks and drills, critics say, offset the low carbon emissions from the burning of natural gas, making it no better than oil or coal. Furthermore, opponents contend, pollutants left behind at hydrofracking drilling sites could seep out from closed pipes and wells, posing a danger to public health for generations. Therefore, critics say, the federal government must step in to institute stricter regulations than the states have already
Experiment 11 is composed of cold liver and 2 mL H2O2. We anticipated that the reaction rate should be very low because a low temperature means a low reaction rate. At low temperatures, particles move slower and therefore there is a lower amount of collisions between the enzymes and the substrates. Based on observations, the reaction rate was fairly high which came as a surprise for us, this is not what we had anticipated. The reaction rate was given a 3.
If the temperature was less than the water bath in some places because only part of the pipet was immersed in the boiling water, the molar mass calculated would become lower. This is because the ideal gas law temperature value would be too low, therefore lowering the overall
3) The reason for the fact that the solvent used in an extraction should have a low boiling point is so that the solvent itself can evaporate out of the mixture. This allows for the extraction or the drawing out of the compounds so that they could be studied more effectively. 4) The extraction process would be more difficult as the higher polarity of the solvent would cause less immiscibility with water because water is also a polar substance and so there would not be a clear and defined separation of the solvents. This makes it difficult to drain of the bottom aqueous layer and to continue with the extractions. Also, the solvent dimethylformamide would take longer to evaporate due to its higher boiling point and would take a long time to continue with the experiment.
Explain. It is valid to conclude that a base were added, the rate of the reaction would slow down because the pressure of oxygen barely increased, meaning the enzymes were not working at a faster rate. 6. Predict what would happen if vinegar (also known as acetic acid) were added to a water solution of hydrogen peroxide and
There was a low efficiency rate for this experiment; energy was most likely wasted into the surrounding environment when the burner was alight. Possible ways to improve this experiment would be to possibly do the experiment in a more enclosed space, so as to disallow any heat escaping into the surrounding atmosphere. A fume cupboard would be suitable (when it is not turned on) as there is less movement in the air to move the energy from its intended target. The thermal energy was not only going into the water, but the can of the calorimeter became hot too, meaning that the thermal energy was transferred into the metal surrounding the water, and not just the
The destruction of the alveolar walls reduces the elasticity of the lung overall. Loss of elasticity leads to the collapse of the bronchioles obstructing airflow out of the alveoli. Air becomes "trapped" in the alveoli and reduces the ability of the lung to shrink during exhalation. This trapped air takes up space and results in a reduced amount of air that can be taken in during the next breath. As a result, less air gets to the alveoli for the exchange of gasses.