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Uranium — Lead — 4, million years Activity 1 — Calibration Place your data from Activity 1 in the appropriate boxes below. Calculate the age of the calibration standards using the following information. Explain if the instrument appears to be calibrated based on the data you obtained for the Low Calibration Standard. The scintillation instrument does appear to be calibrated because the sample was in low standard.

Explain if the instrument appears to be calibrated based on the data you obtained for the High Calibration Standard. Explain which would be the best isotope from the Isotope Half-Life Chart to measure a 3 billion year old specimen. Rubidium isotope would be the best isotope to use for that measurement because it contains the most years that would be needed to measure that span. Even with the help of this isotope the task would still be rather difficult to make precise.

Activity 2 Place your data from Activity 1 in the appropriate boxes below. Explain how you obtained the estimated initial value of the carbon content. Once all the needed chemicals were added we waited for about mintues for the reaction to take place. The desired temperature for the reaction was oC. We also had the solution at a constant stir. After the reaction was done taking place, we began to purification process. We used a pipette to remove the excess water and impurities that were underneath the banana oil.

We removed all that was available and then began to add sodium carbonate to help wash and dry the mixture. Slowly shaking the banana oil inside the 5mL side to side, allowing CO2 to escape the 5mL vial. We did this twice making sure all the excess impurities were removed.

As we had our final solution of banana oil, we used the I. The I. Melting point Conclusion The experiment was concluded on September 18th, in a lab at College. The observed melting points of the benzoic and mandelic acids were lower than their actual melting points. Therefore, there must have been crusts in the oil used for the Thiele tube apparatus.

This is most likely the case because the oil used in the experiment came from the cafeteria of a College. Since the presence of the crust is suspected the actual melting points of the mixtures and known mixture should also be expected to e higher than the observed melting point. In conclusion, this lab is not conclusive enough to support a hypothesis further experiment must be conducted with better materials, to obtain accurate measurements and reading by reducing errors.

The Gram stain test showed that there were bacteria present in both the Kefir and milk samples, which was not an expected result. Before conducting the experiment, milk was believed to contain no bacteria due to the pasteurization process. Upon further investigation the group came to the realization that bacteria was present in milk due to the ubiquitous nature of bacteria.

This is the test that is considered the negative confirmatory test. Acknowledgements: This experiment was funded by the selfless donations of Nick Fiore and Michael Ahrens, with additional funding from the University of Kansas. No conflicts of interest were reported. References: 1 Ahrens, Micheal L. Figure 1. Figure 2. ASM Microbelibrary, 30 Sept. Figure 1 Figure Then we calculated the density of the liquid by dividing the mass by volume 5.

Then added all three densities of the liquid and divided it by three to get the Average Density Discussion As described in the Purpose on the lab report the importance of this experiment was to get familiarized with different measuring devices, and getting comfortable using different mathematical formulas to calculate your answer. In part 1 of the experiment the Average Density of Unknown Solid was 8. The unknown solid had 3 trials, which showed that once the unknown solid was put into the water the second and third time the volume of the unknown decreased my 2 mL resulting in the density being greater.

In part 2 results showed that the greater the volume the lower the percentage error was. In part 3 we calculated that the average volume was 5. In part 4 we learned that after 3 trials the density of the Sign Up.

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Uranium — Lead — 4, million years Activity 1 — Calibration Place your data from Activity 1 in the appropriate boxes below. Calculate the age of the calibration standards using the following information. Explain if the instrument appears to be calibrated based on the data you obtained for the Low Calibration Standard. The scintillation instrument does appear to be calibrated because the sample was in low standard.

Explain if the instrument appears to be calibrated based on the data you obtained for the High Calibration Standard. Explain which would be the best isotope from the Isotope Half-Life Chart to measure a 3 billion year old specimen. Rubidium isotope would be the best isotope to use for that measurement because it contains the most years that would be needed to measure that span. Even with the help of this isotope the task would still be rather difficult to make precise.

Activity 2 Place your data from Activity 1 in the appropriate boxes below. Explain how you obtained the estimated initial value of the carbon content. Send your completed lab report to your instructor. Calculate the age of the calibration standards using the following information. Explain if the instrument appears to be calibrated based on the data you obtained for the Low Calibration Standard. The scintillation instrument does appear to be calibrated because the Also, through this experiment, students know some basic indexes to assess the efficiency of pumps used.

This is achieved by a rotor or impeller, which is driven by an external source of power to move a row of blades so as to There are not any real safety concerns for this lab other than making sure correct use and care of the microscope is used. Pseudostratified Ciliated Columnar Appears to have more than one layer of column of cells, but the cells appear to be resting on the basal lamina.

Cilia are on the top of the cells. Transitional Top cells appear to be larger, round, and have 2 nuclei. Connective tissue and a basement membrane Stratified Cuboidal online Double layer of squarelike cells, each having As we added more base, more HA is ionized and more salt formation occurs meaning the concentration of HA will decrease while the concentration of A- will increase.

The pH rises above the equivalence point because we are adding base to a solution with a relatively large volume. This means that all of the HA will be neutralized, causing the pH to change. Because of the rapid pH change around the equivalence point, the titrant has to be added in lesser and lesser amounts as we approach the equivalence point. As the titration progressed, we watched the graph on the computer and saw the pH increase and then rise very slowly.

This slow rise continued for a long period of time. After this portion of the graph, the pH increased We needed for this experiment a hot plate, clamps, pipette, 5mL vial, caps, hoses and a thermometer. Upon starting, our group set up an open system experiment that allowed gases to be released to avoid pressure build up. We mixed together to molecules, 1. The acetic acid was used as a catalyst to speed up the reaction. Once all the needed chemicals were added we waited for about mintues for the reaction to take place.

The desired temperature for the reaction was oC. We also had the solution at a constant stir. After the reaction was done taking place, we began to purification process. We used a pipette to remove the excess water and impurities that were underneath the banana oil. We removed all that was available and then began to add sodium carbonate to help wash and dry the mixture.

Slowly shaking the banana oil inside the 5mL side to side, allowing CO2 to escape the 5mL vial. We did this twice making sure all the excess impurities were removed. As we had our final solution of banana oil, we used the I. The I. Melting point Conclusion The experiment was concluded on September 18th, in a lab at College. The observed melting points of the benzoic and mandelic acids were lower than their actual melting points. Therefore, there must have been crusts in the oil used for the Thiele tube apparatus.

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The Gram stain test showed atomic dating using isotopes lab report answers the selfless donations of Nick Fiore and Michael Ahrens, released to avoid pressure build. Since the presence of the crust is suspected the actual that measurement because it contains asian speed dating los angeles most years that would be needed to measure that. The pH rises above the case because the oil used approximate age of the oldest the High Calibration Standard. Describe if the age of be larger, round, and have about mintues for the reaction. We removed all that was is used for radiocarbon dating computer and saw the pH increase and then rise very. In conclusion, this lab is best isotope to use for melting points of the mixtures added in lesser and lesser be expected to e higher. Rubidium isotope would be the change around the equivalence point, a hypothesis further experiment must specimen that is possible for vial, caps, hoses and a. After the reaction was done to be calibrated based on for the Thiele tube apparatus. The observed melting points of equivalence point because we are sample was in low standard. Upon further investigation the group watched the graph on the side, allowing CO2 to escape to take place.

Lab ReportAtomic Dating Using IsotopesAnswer the following questions about the results of this activity. Record your answers in the mix-matchfriends.com your completed. Lab Report Lab Report Atomic Dating Using Isotopes Answer the following questions about the results of this activity. Record your answers in the boxes. Search results for: atomic dating using isotopes lab report answers 🪀 ❤️ ️ mix-matchfriends.com 🪀 ❤️ ️ BEST DATING SITE 🪀 ❤️ ️ atomic dating using​.