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Density is the ratio between mass and volume, the unit of density for solid or liquid in the metric system is measured in g/ml or g/cm^3. Mass is the quantity of matter in a particular object, the unit for measuring mass of an object is represented in kilogram (kg) or gram (g). Volume is the certain amount of space occupied by an object, the unit for measuring volume of a particular object is either represented as millimeter (ml) or cubic centimeter (cm^3). The purpose of this laboratory investigation is to provide an introduction to the concept and applications of density measurements. Several unknown samples of matter will be able to be identified based on their density measurement. Carrying out density measurement on each unknown sample of matter will help in figuring out whether the samples are made of the same material or not. The density of each sample will be calculated from the mass (weight of samples) and volume (space of samples) measurements.
Material that was utilized in this laboratory investigation are as follows: Water, tongs, graduated cylinder, top loader balance, Vernier caliper, and two stoppers (black and brown).
Determining the density of each sample required measuring the mass of the two stoppers (black and brown) on a top loader electronic balance. The black stopper mass was 6.84g, while the mass for the brown stopper was 0.36g. Volume is determined by two different methods (volume by length and volume by displacement) in order to illustrate the precision of the data. Volume by length general formula is given as V= π*r^2*h (where r-Radius-Height, and v-Volume), In order to get the exact radius value for each of the stoppers, the Vernier caliper is used to measure the diameter, which is then divided by ...
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...^3) ^2*0. 51 = 0.88cm^3
Density of black stopper is calculated as follows:
D= m ÷ v = 6.84g ÷ 16.43cm^3 = 0.416g/cm^3
Density of Brown Stopper is calculated as follows:
D= m ÷ v = 0.36g ÷ 0.88cm^3 = 0.41g/cm^3
Stopper Mass (g) Volume by length (cm^3) Density
(G/cm^3)
Black 6.84g 16.43cm^3 0.416g/cm^3
Brown 0.36g 0.88cm^3 0.41g/cm^3
Stopper Mass (g) Volume by displacement (ml) Density
(G/ml)
Black 6.84g 5.5ml 1.2g/ml
Brown 0.36g 2.0ml 0.2g/ml
Based on the density calculated from mass and both two methods used to obtain volume. It could be concluded that both of the stopper are not made of the same material. Starting off with the mass of each stopper being different from one another, Black stopper weighs 6.84g and brown stopper weighs 0.36g. The data from the mass (g) clearly show that black stopper has more heavy compared to that of brown.
Half fill the ... ... middle of paper ... ... e data quality. Furthermore, using a graduated cylinder with markings below the 100 mL line would have allowed for more accurate measurements of the initial volume of air in the graduated cylinder.
The only materials needed in the experiment were a single dial caliper, and the skin of the participant that was measured (Lab Manual). A dial caliper was available for purchase online through the use of a simple Google search. The dial caliper was a long metal object with one dial, that was adjustable and that moved the two sharp points at the end of the caliper further away from each other. The purpose of the dial caliper was to measure the length of space between the two sharper points of the dial caliper.
to get an idea of how I would do my real experiment and what apparatus
The first procedure requires one 10mL volumetric pipette, one 50mL buret, two small beakers, one labeled “vinegar” and the other labeled “NaOH”, three 250mL Erlenmeyer flasks, labeled one, two and three, and one large beaker for waste collection. Collect 50mL of vinegar in the beaker labeled “vinegar” and record the brand and listed concentration of vinegar. Then collect about 60mL of NaOH in the beaker labeled “NaOH” and record its concentration.
Regarding the densities of Coke and Diet Coke, I believed that the density of coke would be greater than the density of Diet Coke. Because the content of Coke contains more sugar than Diet Coke, it would contain more mass and since density is mass dependent, Coke would be denser than Diet Coke. From the results of the experiment, there was a slight difference between the densities of Coke and Diet Coke. The measurements obtained from the pipette and the graduated cylinder demonstrated that Coke is denser than Diet Coke while Diet Coke was shown to be denser than Coke using the burette. With the pipette, the average density of Coke is 1.02 and the average density of Diet Coke is 0.99. With the graduated cylinder, the average density is 0.976968 and the average density of Diet Coke is 0.95. With the burette, the average density of Coke is 0.99 and the average density of Diet Coke is 1.0. Among the three instruments, the most precise was the graduated cylinder and the most accurate was the volumetric pipette. Since density is defined as mass/volume, changing the volume of Coke or Diet Coke would have changed.
3. Add on of the following volumes of distilled water to the test tube, as assigned by your teacher: 10.0mL, 15.0mL, 20.0mL, 25.0mL, 30.0mL. (If you use a graduated cylinder, remember to read the volume from the bottom of the water meniscus. You can make more a more accurate volume measurement using either a pipette or a burette.)
The form of Density is partitioned into three sections: A measures 1 - 23, B measures 18 - 40, A1 measures 41 - end. The first A section can be broken into two parts: Aa mm1-14 and Ab mm.15-23. The B section may be broken into two smaller parts, the first Ba from measures 24-29 and the second Bb from measures 32-36 with the omitted portions (mm. 29-32 and mm. 36-40) functioning as transitional material. The unmistakable return of A occurs in measure 41.
I am going to carry out an experiment to measure the change in mass of
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.
== Refer to, Chemistry Lab #1 – What’s the substance? I didn’t change most materials when I did this experiment, but I added 4 materials, which are: * 5 test tubes * 2 stoppers * 1 large piece of paper And I deleted 1 material, which is: * Spatula Methods = == ==
concentrations of 10mM, 20mM and 40mM. What this finding tells us is that our manipulation
Throughout this lab there will be variables in which cannot be changed or the data will be inaccurate. First off, you must have the same size PureBrew coffee filter paper with a diameter of 8cm on the bottom. By having the same size PureBrew coffee filter paper, it will have the same mass as the one investigated in this lab since there are many sizes for filter paper. You should also make sure you have the same size, material, and brand of paper clips. In this investigation large, silver metal, and Wal-Mart branded paper clips were used. If you have different size and materials as your paper c...
Weigh out two 0.100 g. samples of the product and put each into a test
Units of Weight. Use a 10 peso coin and weight it to the nearest 0.1 gram and record this weight both in grams and in milligrams. Similarly, weigh and record the weight of your smaller beaker.