Chemistry 120B: Lab Report Sample

Make three exposures using given technical factors on a phantom knee in PA position . Include saline bags in exposures 1 and 2 to demonstrate patient soft tissue thickness.

pH was recorded every time 1.00 mL of NaOH was added to beaker. When the amount of NaOH added to the beaker was about 5.00 mL away from the expected end point, NaOH was added very slowly. Approximately 0.20 mL of NaOH was added until the pH made a jump. The pH was recorded until it reached ~12. This was repeated two more times. The pKa of each trial are determined using the graphs made on excel.

Six different batches of recombinant HVT-H5 avian influenza vaccines obtained from office of receiving samples in central laboratory for evaluation of veterinary biologics (CLEVB), Abbasia.

The estimated sample to be taken should be 9 lettuce plants/ roots to have the 95% level of confidence and within the 10% of population mean.

In experiment 3.11, we found out whether or not a larger amount of a liquid would get hotter when it boils. To answer this, we heated a specific amount of unknown liquid and recorded the temperature every fifteen seconds. In our scatter plot, we were able to find the boiling point of our liquid. We know that the slope of our graphs is when the liquid molecules were moving around and heating up. The plateau of our graph points is where the liquid started to evaporate and boil. This is were we found our boiling point at. Shantel and I decided that our boiling point was about 98º Celsius. If you had another slope in your graph, that was when you were simply heating the leftover gas. The histogram showed us that there were about equal amounts of data in the higher temperature (about 95º Celsius) bins for both 20mL of liquid and 10mL of liquid. Also, in the lower temperature bins (75º to 80º Celsius) there was about equal amount of data for 20mL of liquid and 10mL of liquid. There was 7 pieces of data for 10mL of liquid in the lower bins, and 6 pieces of data for 20mL of liquid. If a larger amount of liquid did have a higher boiling point, the clusters would be organized by volumes or amount. For example, all of the 20mL pieces of data would be in the higher temperature bins, and all of the 10mL pieces of data would be in the lower temperature bins or flipped. Rather, the bins were clustered by identity. The boiling point is a characteristic property.

Day 1. Michael was coming home for vacation from college. When he got home he found out that

6-3: This process is used by cells to manufacture _biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products__

The mole is a convenient unit for analyzing chemical reactions. Avogadro’s number is equal to the mole. The mass of a mole of any compound or element is the mass in grams that corresponds to the molecular formula, also known as the atomic mass. In this experiment, you will observe the reaction of iron nails with a solution of copper (II) chloride and determine the number of moles involved in the reaction. You will determine the number of moles of copper produced in the reaction of iron and copper (II) chloride, determine the number of moles of iron used up in the reaction of iron and copper (II) chloride, determine the ratio of moles of iron to moles of copper, and determine the number of atoms and formula units involved in

2. (5 pts) List and explain the names and affiliations of the various characters/stakeholders in this story – I’m looking for us to use the story to map out the complexities that are generally associated with solving public health puzzles – the stakeholders you list and explain here should apply to many of the cases we consider going forward.

The main objective of this experiment is to differentiate between a physical change and a chemical change.

Dispense .5 mL water into the already weighed conical vial, replace cap and face insert on its down side.

Conclusion The mass of the recovered copper was 5.22g, much greater than the initial mass of copper, 2.09. The number of moles of the recovered copper was calculated to be 0.0821mol while the number of moles of the initial copper was calculated to be 0.0329mol. The percent of copper recovered was calculated to be 250.%, and the percent error of copper recovered was calculated to be 150.%. From what seems to have been an increase in copper from the initial mass to the recovered mass, it can be assumed that the copper solid recovered at the end of the lab contained compounds other than the expected copper, as there was no way for additional copper to be introduced into the reactions.

i. The mixtures used in the IAA odor detection test shall be prepared in an area separate from where the test is performed, in order to prevent olfactory fatigue in the subject. j. If the test subject is unable to correctly identify the jar containing the odor test solution, the IAA qualitative fit test shall not be performed. k.

Discussion Describe the pattern or relationships you observed in your results (shape of graph, table results, personal observations). In the results founded, the patterns and relationships of these results are unable to be identified as only one entry where there was any visual rusting that had occurred, and a pattern requires multiple results for each Test-Tube. Therefore a pattern is unable to be identified with these results alone.

The two independent variables were luminant cue patches (light cue, dark cue and equiluminant cue) and location of the cue and target (valid side with cue and target on same side and invalid side with cue and target on opposite sides). The dependent variable was participants’ reaction time in millisecond.