in any given experiment how is it possible for your experimental technique to be both precise...
in any given experiment how is it possible for your experimental technique to be both precise and accurate
Homework Answers
- Precision is the measure of closeness of two or more measurements relative to each other, irrespective of whether those measurements are the true value or not.
- Accuracy is a measurement of the closeness of the measured (experimental) value is to its standard or known value.
- It is possible for measurements to be precise but not accurate.
- An experimental technique is said to be precise when the experimental values obtained for an experiment is almost same (reproducible) dor multiple measurements.
- An experimental technique is said to be accurate when the experimental value obtained for an experiment is close to the actual or the exact value.
- Therefore, an experimental technique which provides both, reproducible values and close values to the exact value will be both, precise and accurate.
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in any given experiment how is it possible for your experimental
technique to be both precise...
Why is volume more precise? Given your experience in mass determinations (Experiment 1) and with volumetric...
Why is volume more precise?
Given your experience in mass determinations (Experiment 1) and with volumetric glassware (Experiment 2), which factor used in calculating the density- mass or volume-is likely to be measurable with greater precision? Explain. 6.
A student performs experiment to termine the density of S o uton. She sugar solution is...
A student performs experiment to termine the density of S o uton. She sugar solution is 1.40 g/ml, which statement below best describes terrest? is the following : 70 L 139 De actual value for the dersity Select one A Her results are precise, but not accurate B. Horrests are accurate, but not precise C. Her results are both precise and accurate D orrests are neither precise nor accurate E It is possible to determine with the information given
Answer all questions: 1. Was the experiment accurate in finding the experimental value for the frequency?...
Answer all questions: 1. Was the experiment accurate in finding the experimental value for the frequency? YES NO State clearly the basis for your answer. 2. Was the experiment of finding the frequency precise? YES NO What would your need to answer this question? Explain your reasoning. 3. Does the value of intercept you found reasonable? YES NO Explain your answer. loheceptiyair订 _o.nouu mete, s/yes 4. Suppose the frequency is f-60 Hz, L is the one you measured, and the...
1) What is the objective of this experiment? ( name of the experiment chemical statistics) A)...
1) What is the objective of this experiment? ( name of the experiment chemical statistics) A) To convert from the English to the metric system using dimensional analysis. B) All are correct. C) To understand the use of significant figures and uncertainty in data recording and calculations. D) To calculate the percent error and average deviation of data points. 2) You've gotten the results: 2.3, 2.5, 2.2 & 2.1; the true value is 3.1. Are your results Accurate and/or Precise?...
) Answer the following questions in paragraph form: 1. How does your stress-reducing technique work? How...
) Answer the following questions in paragraph form: 1. How does your stress-reducing technique work? How does it affect our physiology? (Use your class notes, textbook, and internet to answer this question, however be sure to cite your sources) 2. Did you notice any changes to your heart rate throughout the experiment? Did it change before vs after the session? Did it change over the 3 weeks? 3. How were your stress levels over the 3 weeks of the experiment?...
calorimetry experiment Guidelines for Discussion: Answer the following questions, as per your experimental observations. 1. What...
calorimetry experiment
Guidelines for Discussion: Answer the following questions, as per your experimental observations. 1. What happens if initial temperature is not recorded in each experiment? 2. What happens if the calorimeter is not covered properly? 3. How will you get the final temperature? 4. What are the techniques used in this experiment? 5. Comment on possible accuracy of your results Guidelines for Conclusion: 1. What is your result considering the objective (s) of the experiment? 2. What did you...
Experimental technique 5. [1pt] Which of the following statements are true for this experiment? E.g., enter...
Experimental technique
5. [1pt]
Which of the following statements are true for this experiment?
E.g., enter AB. If none are true, enter N. You have 4
tries.
Everyone must wear safety glasses.
For each launch angle, the projectile range is measured for one
speed setting.
Never look into the barrel of the launcher when it is
loaded.
The launch angle θ measured using the plumb line is the angle of
the launcher with respect to the vertical.
The projectile is...
E Styes Styles 1) Imagine that you place the Bull's Eye on the floor, and then...
E Styes Styles 1) Imagine that you place the Bull's Eye on the floor, and then drop a small ball from a 2-meter height (say, extending your arm above your head), aiming at the center of the target. The ball, hitting the carbon paper, will leave a mark on the bottom Bull's Bye sheet. You repeat this for a total of 10 drops. Then you draw a circle around these marks using a red pen 2) 3) Procedure- Part B...
tell how each of the following experimental errors will affect your experimental results (...
tell how each of the following experimental errors will affect your experimental results ( yield,purity,or both) and explain why.a)you failed to dry the product completely.b) you used enough water to recrystallize phenacetin, but your unknown was acetanilide.c)inexperiment 2, you didn't extract all of the aspirin from the dichloromethane solution.
Consider the experiment of tossing a coin three times. How many experimental outcomes exist?
Consider the experiment of tossing a coin three times. How many experimental outcomes exist?
Why is volume more precise?
Given your experience in mass determinations (Experiment 1) and with volumetric glassware (Experiment 2), which factor used in calculating the density- mass or volume-is likely to be measurable with greater precision? Explain. 6.
A student performs experiment to termine the density of S o uton. She sugar solution is 1.40 g/ml, which statement below best describes terrest? is the following : 70 L 139 De actual value for the dersity Select one A Her results are precise, but not accurate B. Horrests are accurate, but not precise C. Her results are both precise and accurate D orrests are neither precise nor accurate E It is possible to determine with the information given
Answer all questions: 1. Was the experiment accurate in finding the experimental value for the frequency? YES NO State clearly the basis for your answer. 2. Was the experiment of finding the frequency precise? YES NO What would your need to answer this question? Explain your reasoning. 3. Does the value of intercept you found reasonable? YES NO Explain your answer. loheceptiyair订 _o.nouu mete, s/yes 4. Suppose the frequency is f-60 Hz, L is the one you measured, and the...
calorimetry experiment
Guidelines for Discussion: Answer the following questions, as per your experimental observations. 1. What happens if initial temperature is not recorded in each experiment? 2. What happens if the calorimeter is not covered properly? 3. How will you get the final temperature? 4. What are the techniques used in this experiment? 5. Comment on possible accuracy of your results Guidelines for Conclusion: 1. What is your result considering the objective (s) of the experiment? 2. What did you...
Experimental technique
5. [1pt]
Which of the following statements are true for this experiment?
E.g., enter AB. If none are true, enter N. You have 4
tries.
Everyone must wear safety glasses.
For each launch angle, the projectile range is measured for one
speed setting.
Never look into the barrel of the launcher when it is
loaded.
The launch angle θ measured using the plumb line is the angle of
the launcher with respect to the vertical.
The projectile is...
E Styes Styles 1) Imagine that you place the Bull's Eye on the floor, and then drop a small ball from a 2-meter height (say, extending your arm above your head), aiming at the center of the target. The ball, hitting the carbon paper, will leave a mark on the bottom Bull's Bye sheet. You repeat this for a total of 10 drops. Then you draw a circle around these marks using a red pen 2) 3) Procedure- Part B...
Consider the experiment of tossing a coin three times. How many experimental outcomes exist?
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