II. Purpose/Background: The purpose if this lab was to determine the density of water and an unknown liquid. Density is defined as the mass of a substance divided by its volume. It is an intrinsive property of matter and is used to specifically characterize substances.
III. Procedure: 1.We massed an empty 10mL graduated cylinder to the nearest .01g. 2.Then, we filled the graduated cylinder with 4.0-5.0 mL of distilled water, 3.massed it to the nearest 0.1 ml and 4. recorded the data. Then to determine the density of the unknown liquid; we repeated the steps.
IV. Data and Results
Table 1
Distilled Water Trial 1 Trial 2 Trial 3 Average Density
Mass of graduated cylinder and water 30g 34.9g 34.5 -----------------------
Mass of empty graduated cylinder 25.59g 25.59g 25.59g -----------------------
Mass of water ONLY 4.41g 9.49g 9.49g -----------------------
Volume of Water 4 mL 9.5 mL 9 mL -----------------------
Density of water 1.1025 g/mL .99 g/mL 1.054 g/mL 1.05 g/mL
Table 2
Unknown Liquid Trial 1 Trial 2 Trial 3 Average Density
Mass of graduated cylinder and unknown 33.89g 38.50g 37.32g -----------------------
Mass of empty graduated cylinder 25.59g 25.59g 25.59g -----------------------
Mass of unknown ------------------------
Volume of unknown 6.5mL 8.71mL 7.89mL ------------------------
Density of unknown
Table 3: Accepted Values for Density of Various Liquids
LIQUID DENSITY (g/mL) at 20˚C
Ethanol 0.789
Isopropyl Alcohol 0.786
Methanol 0.791
Mineral oil 0.830
Hydrogen Peroxide 1.110
Glycerin 1.261 V. Graphs
VI. Sample Calculation D= M÷V = 4.8g ÷ 5.1mL = .94 g/ml
VII. Discussion/Conclusion
In this lab, we calculated the mass of water and an unknown liquid. After finding the density of the unknown liquid we concluded that the liquid was Mineral Oil.
You May Also Find These Documents Helpful
-
Calculate the density of the unknown liquid for each trial. (Divide the mass of the liquid calculated above by the volume of the liquid.)…
- 709 Words
- 3 Pages
Satisfactory Essays -
- Each liquid that was used in Part I has its own independent density. Density being the relationship between the mass and volume of a substance. In this portion of the lab we explored relative density, each liquid compared to the others. The corn syrup was the most dense, in comparison to the other liquids. Whereas the vegetable oil was the least dense compared to the other liquids. The liquids in between followed this same principle in their respective orders.…
- 1556 Words
- 6 Pages
Good Essays -
2. Calculate the density (g/mL) of the unknown liquid (B) for each trial. (Divide the mass (g) of the liquid calculated above (A) by the volume (mL) of the liquid [2])…
- 424 Words
- 2 Pages
Satisfactory Essays -
CHM130 Lab 6 Exploring Density Name A. Data Tables Place your completed Data Tables here Part IIIa (3 points) Volume of water in graduated cylinder (mL)10 mlMass of rubber stopper (g)11.15Volume of water and rubber stopper (mL)16.5 Part IIIb (6 points) Volume of water in graduated cylinder (mL)20Mass of iron nail (g)3.66Volume of water and iron nail (mL)20.5 Part IV (20 points) Type of Aluminum FoilMass (g)Length (cm)Width (cm)Volume (cm3)Thickness (cm)Regular.63g15 cm 10.02 cm.21 cm3.0014 cm Heavy Duty.97g15 cm10.01 cm .36 cm3.0024 cm B. Follow Up Questions Show all work for questions involving calculations. Part I Use the concepts/vocabulary of density to explain why the liquids formed layers in Part I of the procedure. (8 pts) The liquids formed layers because they all had different densities. The liquids with light density were towards the top of the layers. What was the control used during the liquid portion of Part I of this experiment (8 pts) (Hint What did you do the same with each liquid to ensure a fair comparison) The control used during the portion of part I was the amount of liquid used. Rank the following in terms of relative density (9 pts) Isopropyl alcohol (rubbing alcohol) lowest relative density Liquid dishwashing detergent- intermediate relative density Dark corn syrup-high relative density Vegetable oil-second lowest relative density (intermediate) Glycerin-second highest relative density Rubber stopper- second highest relative density Cork stopper- low relative density (ended up with the alcohol Wood- low relative density (ended at the top with the rubber alchohol. Lead- highest relative density Part II (7 pts each) In Part II, what happened to the cans of soda when you placed them in water Use the concepts/vocabulary of volume and mass to explain the final positions of the cans in the sink full of water. The diet soda floated in the water while the regular soda sank. The regular soda had a higher relative…
- 5674 Words
- 23 Pages
Satisfactory Essays -
Part 2: I used a graduated cylinder on the tarred scale empty and then with both water and isopropyl alcohol to determine the mass of both and calculated their densities. Next, I measured the length, width, and height of a magnet to determine volume. I then used the water displacement method by filling a cylinder with water and then placing the magnet in and recording the difference in the water level to determine volume and density. Lastly, I used Archimedes’ method to by recording the mass of a metal bolt then placing it in water and observing the displacement. I then converted this to density of water and repeated with a magnet.…
- 1173 Words
- 5 Pages
Powerful Essays -
The objective of the experiment was to determine the density of a metal along with the density of distilled water. In an attempt to help the experimenters more thoroughly understand the relationship between concentration and density.…
- 1393 Words
- 7 Pages
Good Essays -
I. Purpose- The purpose of this lab is to identify the unknown substances by calculating the densities of the given substances then comparing those densities to the actual densities on the table given.…
- 893 Words
- 4 Pages
Better Essays -
The first objective of this lab is to make measurements of mass and volume for 3 different liquids. The second objective is to analyze the data by means of graphing technique. The last objective for this lab is to determine a mathematical relationship between mass and volume for each liquid.…
- 314 Words
- 2 Pages
Satisfactory Essays -
This experiment is composed of three parts. The purpose of the first experiment is to find the density of…
- 671 Words
- 5 Pages
Satisfactory Essays -
Density is defined as the ratio of mass to the volume of a substance: [2]…
- 1478 Words
- 6 Pages
Good Essays -
2. Calculate the density of the unknown liquid for each trial. (Divide the mass of the liquid calculated above by the volume of the liquid.)…
- 414 Words
- 2 Pages
Satisfactory Essays -
2. Calculate the density of the unknown liquid for each trial. (Divide the mass of the liquid calculated above by the volume of the liquid.)…
- 732 Words
- 3 Pages
Powerful Essays -
Calculate the density of the unknown liquid for each trial. (Divide the mass of the liquid calculated above by the volume of the liquid.)…
- 463 Words
- 2 Pages
Satisfactory Essays -
* This laboratory activity will give you the opportunity to get more familiar with some of the basic measuring devices that are common in chemistry labs. You will use the measurements performed in this lab to calculate density.…
- 625 Words
- 3 Pages
Good Essays -
3. Density is a measure of how “light” or “heavy” an object is for its size. To find the density of an object, divide the mass by the volume. (Calculators are recommended.)…
- 1186 Words
- 5 Pages
Satisfactory Essays