She concluded Brigit might not have done the tests accurately because of the previous reading. Instead of addressing this issue she decided to avoid the confrontation and shoulder the responsibility of retesting everyone. In my opinion passive communication, although avoid confrontation is not effective because Brigit is left unaware she completed the tests inaccurately. This is an injustice to her and the students because she will continue to make this mistake unknowingly. The more effective way to handle this in my opinion would be to ask Brigit to demonstrate how to complete the test and show her what she is doing incorrectly.
This would affect the volume of gas captured in the pipette. And with a limited amount of sucrose its possible sucrose wouldnt properly fill in as a source of glucose for cellular respiration. Another source of error would be that we didnt let the burner heat up all the way to the correct temperature so that would affect the outcome massively and significantly. Also when we had 10% sucrose, we only recorded the time two times, compared to the other percentages of sucrose where we had many other trials and times recorded. We also found problems when we had placed clay on the tip of the pipette to seal the air out.
The data in the chart above shows that the number of drops went down by 1.25 when the liquid was changed from water to milk. Further testing may be needed. Sources of error: The main source of error in this experiment was the human error. Our group found it was difficult to keep our hands at the height of 2 cm, which is a variable that we couldn’t control nor keep track of. Also without knowing someone could bump the table, move the Petri dish or in some way caused the liquid on the penny to spill before it
The clinical outcome in this situation was clearly that Mr. B was over-sedated leading to a very dangerous situation. Hypoxia during sedation is a common side affect, which is treated by giving the patient O2 or reversing the sedation. However in this situation the staff was not aware that he was hypoxic, and why weren’t they? The answer a nurse had silenced the alarm but had not done an assessment nor alerted anyone else of the situation. Why did the nurse choose to silence the alarm with no further action?
Our scale only measures to grams accurately, and could have not accurately represented the .68g of CaCO3, or we could have lost the solid precipitate in the process of the experiment. These errors could be reduced with a more accurate scale, as well as more experienced hands performing the procedure, or skilled hands, ie: we are novices at this lab, and training could produce more accurate
2. The procedural error might have been due to the student not setting up the distillation apparatus correctly in par with the thermometer. The position of the thermometer might have caused that error as well. The top of the thermometer bulb might have been above the bottom of the side arm on the distilling head. 3.
Examine why some sociologists choose not to use experiments when conducting research? (20 marks) Many sociologists choose not to use laboratory experiments for research because it fails to achieve their main goal of validity. To have complete control of conditions in a lab experiment is impossible as that level of control over variables would require a completely artificial environment which will be very expensive. However in contrast other sociologists such as Positivists disagree and are in favour of laboratory experiments. Other alternatives to laboratory experiments are field experiment and the comparative method.
Systematic error in physical sciences commonly occurs with the measuring instrument having a zero error. A zero error is when the initial value shown by the measuring instrument is a non-zero value when it should be zero.1 Systematic error can be caused by various factors that constantly occur which is why they are difficult to steer clear of. The purpose of this experiment is to get acquainted with the effects of systematic errors and the different natures in which they exist leading to the inability to negate errors or losses for further reference future labs. Reagents |Compund |M.W |Amt. Used |B.P/M.P |Density |Structure | |Cyclohexane |84.16amu |“25ml” |80.74° C |0.779g/mL (l) |[pic]2 | |Benzoic Acid |122.12amu |1.00g |250°C |1.27g/ml |[pic]3 | Procedure/Observations 1.)
This may have entered the detector during the experiment, skewing the data. This is an experiment that needs to be performed in total darkness, but it was not possible due to the blinds not blocking out all of the sunlight and the computers being on throughout the experiment. A final cause of error may have been the yellow and green filters2. They have been inadequate, insufficiently blocking high frequency light. These unwelcome high energy photons would have ejected high energy electrons, allowing them to surpass the cathode-anode potential, which would have increased the measured stopping
Science has not proven how stress causes HBP but some scientists believe that stress can affect a person’s behaviour towards health, decision-making and socioeconomic status. For instance, a stressed person tend to eat more or less, smoke, abuse drugs, drink alcohol or put off active lifestyle. Myths about High Blood Pressure Myth #1: ‘High blood pressure runs in my family. I will get it and there’s nothing I can do’ You may be able to develop high blood pressure if it runs in your family but many people with a family