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experiment in the calibration of volumetric glassware
background of the experiment of volumetric glassware
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Experiment Number: Title of Experiment:
Laboratory One (1): The use of volumetric glassware
Objectives:
• To be able to distinguish between different glassware and determine its respective purpose in the laboratory.
• To differentiate between qualitative and quantitative glassware.
• To illustrate the difference between accuracy and precision for each glassware.
Partners:
Introduction:
This laboratory experiment is set out to educate the student on the different types of glassware found in the laboratory and their function. It is important to know the use of each glassware in the laboratory since not all carries the same function and use of the wrong glassware can lead to an unsuccessful laboratory experiment. In the laboratory some glassware
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Volume of H2O transferred 9.7122 9.7655 9.5984
Average volume 9.6920
% Error -3.08% Mass of empty Erlenmeyer flask: 53.4966g
25-ml measuring cylinder Trial 1 Trail 2 Trial 3
Mass of flask plus 10ml H2O 62.9744g 72.7394g 82.4972g
Mass of H2O transferred 9.4778g 9.765g 9.7578g
Volume of H2O transferred 9.4778 9.765 9.7578
Average volume 9.6669
% Error -3.331% Mass of empty Erlenmeyer flask: 53.5148g
100-ml measuring cylinder Trial 1 Trail 2 Trial 3
Mass of flask plus 10ml H2O 61.8631g 70.6308g 79.0389g
Mass of H2O transferred 8.3483g 8.7677g 8.4081g
Volume of H2O transferred 8.3483 8.7677 8.4081
Average volume 8.5080
% Error -14.92% Mass of empty Erlenmeyer flask: 53.5975g
Graduated pipet Trial 1 Trail 2 Trial 3
Mass of flask plus 10ml H2O 63.6160g 73.6981g 83.6618g
Mass of H2O transferred 10.0185g 10.0821g 9.9637g
Volume of H2O transferred 10.0185 10.0821 9.9637
Average volume 10.0214
% Error
to get an idea of how I would do my real experiment and what apparatus
American businesswoman Carly Fiorina once concluded, “If a decision-making process is flawed and dysfunctional, decisions will go awry.” In the critically acclaimed memoir The Glass Castle, Jeannette Walls pilots a turbulent excursion through the bottleneck of her childhood and dysfunctionality and flawed decision-making is all too common. Throughout this memoir the reader learns of the the appearances and disappearances of stability and functionality, discovers the theme of fantasy vs. reality, and determines how and why the familial dynamics of the Walls alter through the duration of the memoir. The reasons for the instability of the family are evident.
The laboratory experiment gives the experimenter a greater chance to control the conditions and enables you to measure behaviour with greater precision. This method also allows for quantative research and also enables greater control of variables. Although it gives the experimenter greater control, this can also seem daunting to the subject who may feel more uncomfortable and is less likely to ...
“Life with your father was never boring.” – Rose Mary Walls. Rose Mary Walls, Jeannette Walls’s mother and Rex Walls’s spouse, reminisces life with Rex, which included migrating very frequently, refusing to conform, and advocating self-sufficiency. In Jeannette Walls’s The Glass Castle, Walls reveals that there are turbulence and order in life, the influence of family, and how she develops as she grows up through Walls’s recollection of her life, from living in a nomadic household, where her parents neglect their children, to living in a squalid hovel with no plumbing, and finally living in New York City, where she works as a journalist.
The author directly appeals to his audience of teachers by writing about how useful the demonstration would be in a classroom. The author’s tone is formal and academic in nature, without heartfelt appeals or attempts to persuade by emotion. In the span of only a few pages, L.B. The church has given us an overview of the winemaking process. He has done so with sufficient detail for those in the chemistry community to follow along, yet still in a cursory enough manner as to not bog them down with the unnecessary. Written as if it were the procedure of an experiment, he has given enough information for the experiment to be repeated, tested, validated and improved upon.
After five the test tube was removed and cooled to room temperature. Three more test tubes were obtained and labeled 1, 2, and 3. The correct reagent was added to each test tube as seen. The spectrophotometer was adjusted
Planning Firstly here is a list of equipment I used. Boiling tubes Weighing scales Knife Paper towels 100% solution 0% solution (distilled water) measuring beakers potato chips Cork borer. We planned to start our experiment by doing some preliminary work. We planned to set up our experiment in the following way.
A hot plate is acquired and plugged in and if left to warm up. Fill two beakers with 0.075kg of water and record the temperature using a thermometer and record it. Place one of the beakers onto the hot plate and drop one of the metal objects in. Wait for the water to boil and wait two minutes. Take the object out of the water and drop it into the other beaker. Take the temperature of the beaker and record the rise in temperature.
One of the most interesting properties of glass is that of it being able to bend and reflect light. Through the bending and reflecting of light rays, an image is created. What happens though when the image formed is not the focal point but rather is the source of the image, the glass itself? In the commencement of Dave Eggers’s novel ‘The Circle,’ there is recurring images of glass. The lustrous, pristine, and progressive visage that glass supplies encapsulated the Company’s essence of high quality and rapid advancement, and as such comprised most of the physical structure of the building. However, the high-end aesthetic that glass provides is not the only idea that Eggers is attempting to promulgate through the glass images. The less obvious
The purpose of the lab was to show the effect of temperature on the rate of
By doing this experiment, I can know the physical and chemical properties of these samples. After I get my results about the physical and chemical properties of these samples, I can compare my results with the information given by the past student and identify the 5 unknown samples, finding out which sample is which substance. Hypothesis = ==
By exposing the chocolate and the cookies before the light and heat of the 60-watt light bulb, the students will be able to progressively observe the process of the material melting and make records at every stage of the experiment. Using the 15 seconds step, the students can identify the melt temperature and time of the chocolate under the lab conditions as well as make and analyze their records in the final part of the experiment. The experiment is expected to establish, which of the chocolates and cookies melt faster, and make conclusions about the influence of the consumables ingredients on their physical properties. This corresponds with the TEK 112.11 (5B) procedure, which allows students to “observe, record, and discuss how materials can be changed by heating or
3. Why are the crucible and lid heated at the beginning of the experiment before being weighed?
...hat it could also be used to show measurements, be used in science, and that it could be used to ride in things such as hot air balloons. It could be used to find measurements because you could be trying to fill up the balloon just to see how tall or how wide it can get, and then measure it. It could also be used in science for that reason, and if you were testing the acidity in something, and having it fill up with something other than air or helium.
When handling glassware examine for shatters before use and never touch shattered glass with bear hands.