# lab3c chem11

Satisfactory Essays
314 Words
Grammar
Plagiarism
Writing
Score
lab3c chem11
Lab #4
Experiment 3C
Graphing as a Means of Seeking Relationships

Pre-Lab Questions
1. Data in Lab #4, Experiment 3C will be analyzed in two different graphs. One of the graphs containing your own data and the other containing the class data.
2. The liquid in this experiment that is flammable as well as poisonous is Methanol.
3. The two variables that will be being measured are mass and volume. To measure the volume, a buret and 250mL Erlenmeyer Flask. To measure the mass, a scale and an Erlenmeyer Flask will be used.
4. It is important to the class that accurate results are obtained because a class data graph will be made after all the data is recorded.

Objectives 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.

Materials & Methods See Heath Chemistry Laboratory Experiments Textbook for a full set of materials and methods used in this experiment.

Observations & Data Vi of buret: 20.8 mL Vi of buret: 20.0 mL Vi of buret: 4.1 mL Vf of buret: 44.3 mL Vf of buret: 43.5 mL Vf of buret: 27.6 mL

Table 1: For Group #15 , *Volume = 23.5 mL Water Alcohol Salt Solution
Volume (mL)
Mass (g)
Volume (mL)
Mass (g)
Volume (mL)
Mass (g)
23.5
24.4
23.5
18.9
23.5
27.8

By Itself: 130.6 g
With Water: 155.0 g , 155.0 g - 130.6 g = 24.4g
With Salt Solution: 182.8 g , 182.8 g - 155.0 g
With Alcohol: 201.7 g , 201.7 g – 182.8 g

mf – mi = ∆m
201.7 g – 130.6 g = 71.1 g

Table 2: Class Results

Water
Alcohol
Salt Solution
Lab Station
Volume (mL)
Mass (g)
Volume (mL)
Mass (g)
Volume (mL)
Mass (g)
1
2
2.1
2
2.2
2

## You May Also Find These Documents Helpful

• Satisfactory Essays

Procedure: I used a measuring device such as a ruler, balance or volumetric flask to determine the values for each measurement.…

• 1411 Words
• 11 Pages
Satisfactory Essays
• Better Essays

The purpose of this lab is to become familiar with how to use the ChemLab program for determining mass using both the centigram balance and the electronic balance.…

• 577 Words
• 3 Pages
Better Essays
• Better Essays

2. To determine the densities of water, an unknown liquid, a rubber stopper, and an unknown rectangular solid.…

• 1425 Words
• 7 Pages
Better Essays
• Good 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
• Powerful Essays

The data gathered and calculated in the experiment accurately portrayed the way the reactions would have taken place. The chloride analysis was a little bit off from other groups due to the fact that our AgCl was in clumps, creating less surface area, thus our product took longer to burn and may not have burned correctly compared to other groups; yet there are several experimental factors that could have caused us to have different results than other groups, i.e. different measurements for samples. Our sources of error could have included eye measurement error, timing of set solutions error, measurement errors, and small calculation errors. Among other variables, the calibration of the analytical balance and spectrophotometer could have been off slightly, yet our results, like most other groups, still followed the general trend line generated by the graph using Beer’s Law. The measurement errors could have occurred due to the fact that one partner’s perspective of a measurement could be different than the others, but the lab cannot be preformed solo. When it comes to improving the lab, there aren’t to many ways to ensure accurate measurements due to the fact that in any experiment there are human and environment variables that cannot be accounted for, or even prepared for. In any experiment there will always be human error.…

• 1372 Words
• 6 Pages
Powerful Essays
• Good Essays

The volume of NaOH solution used in the titration is given by the initial buret reading subtracted (0.50 mL) from the final buret reading (23.78 mL).…

• 635 Words
• 3 Pages
Good Essays
• Satisfactory Essays

1. Identify each unknown from Part One of the lab and briefly explain why you identified each unknown as you did.…

• 470 Words
• 2 Pages
Satisfactory Essays
• Powerful Essays

Note : some questions will display a variable like "nCount" or "SyInput" instead of an actual number in the data summary.…

• 1576 Words
• 7 Pages
Powerful Essays
• Powerful Essays

Using SN1 reaction mechanism with hydrochloric acid, t-Pentyl alcohol was converted to t-Pentyl chloride in an acid catalyzed reaction. The reaction took place in a separatory funnel designed to separate immiscible liquids. The crude product was extracted by transferring a solute from one solvent to another. The process of washing the solutions by phase transfer was used in order to remove impurities from the main solvent layer. Finally, the crude product was dried with anhydrous Calcium chloride and purified once more by simple distillation technique.…

• 1041 Words
• 5 Pages
Powerful Essays
• Satisfactory Essays

1. Describe the relationship that you observed between pressure and volume in this lab. Refer to your data and/or graph to help support your answer.  …

• 686 Words
• 4 Pages
Satisfactory Essays
• Good Essays

The following procedures and materials listed are what you will need in order to conduct the experiments end lab results. Equipment needed to perform this experiment is a 50 ml test tube, 100 ml beaker, 250 mL Erlenmeyer flask, Buchner…

• 878 Words
• 4 Pages
Good Essays
• Powerful Essays

3. Carefully analyze the graphs to determine which information can be pulled off which graph.…

• 1526 Words
• 6 Pages
Powerful Essays
• Satisfactory Essays

2) Fill the cylinder to the 10mL mark with a beverage. Measure and record the mass of the beverage in the graduated cylinder.…

• 250 Words
• 1 Page
Satisfactory Essays
• Powerful Essays

| [Solubility Product Constant] | Experiment 11 | | Molly McCabe | 4/18/2013 | | Data Tables: Part 1 and Part 2 Experimental Data: Standard | Calculated volume of copper sulfate in standards | Absorbance values | Blank | 0.0 mL | 0.0 | 1 | 1.25 mL | 0.094 | 2 | 3.75 mL | 0.065 | 3 | 2.50 mL | 0.099 | 4 | 3.50 mL | 0.129 | 5 | 5.00 mL | 0.187 | Collected Data | Test tube 1 | Test tube 2 | Test tube 3 | Test tube 4 | Test Tube 5 |…

• 1473 Words
• 6 Pages
Powerful Essays
• Powerful Essays

First, obtain a dry 10 mL volumetric flask that includes a stopper with it and weight on a digital scale. Be sure to get the mass at the closest milligram. Then, pour DI water to the calibration mark of the flask. Place the stopper back and weigh it again on the same digital scale. Once recorded, it is okay to pour this water down the drain.…

• 1163 Words
• 5 Pages
Powerful Essays