Images: ©FLVS 2003 |
Images: ©FLVS 2003 |
Alicia and Dan | 7.94 x 10-6 | ± 5.06 x 10-6 | -5571.4% | Uncertainties: 10 mL volumetric flask | ± 0.02 | 25 mL volumetric flask | ± 0.03 | 1 mL volumetric pipet | ± 0.006 | 5 mL volumetric pipet | ± 0.01 | 4 mL volumetric pipet | ± 0.015 | 3 mL volumetric pipet | ± 0.010 | 50 mL graduated…
1 Draw a cross on a piece of paper and put it underneath a 100 cm3 measuring cylinder, or use the cross from part 2, so it can be seen when looking down the cylinder.…
1. Calculate the mass (g) of the liquid for each trial (A). (Subtract the mass (g) of the empty graduated cylinder [1] from the mass (g) of the graduated cylinder with liquid [3])…
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…
III. Procedure- The first thing one must do to identify which substance is which is to calculate the densities. To do this, one must take the mass and volume of each individual substance. Starting with mass, one can use the triple beam balance. Make sure the balanced is zeroed. Once that is true, place the object onto the balance a carefully find the mass of the object. Repeat and record the results found of each individual substance. To find the volume, one can use the water displacement method. One will fill up a graduated cylinder with water to a specific amount. 20 mL is sufficient. Once completed, one will drop one of the substances into the graduated cylinder and record how far the water level rises. If it starts at 20mL and rises to 22mL then the volume of the substance is 22mL minus 20mL, so 2mL. Repeat and record the results found of each individual substance.…
1) A graduated cylinder is filled with 25.0 mL of water. A solid sample is dropped into the graduated cylinder and the…
Insert the tiny pellets of aluminum which you recorded the mass in step 1 of this procedure in the measuring cylinder containing water and record the final volume.…
III. A.)With a ruler of calipers calculate volumes of regular and irregular objects- fill in chart.…
1) Discuss how your choice of equipment and how it affected the accuracy of your method. Discuss good volumetric technique.…
Calculate the mass of the liquid for each trial. (Subtract the mass of the empty graduated cylinder from the mass of the graduated cylinder with liquid.)…
Introduction: Do you think you could measure the average thickness of a sample of M&Ms without directly measuring selected M&Ms? The answer is "yes," and in this activity you will make direct and indirect measurements of the thickness of M&Ms. You will compare the results and evaluate the reliability of each method of measurement. Be sure to view the tutorial on the proper use of the vernier caliper. Please re-visit the information on when to cite sources.…
Procedure: I used a measuring device such as a ruler, balance or volumetric flask to determine the values for each measurement.…
- Stations were set up having three test tubes, a wax marker and a ruler for measuring. We were to indicate measurements on each test tube at 1cm and 2cm from the bottom. We then identified each test tube as 2a, 2b, and 2c.…
B. Using the data from Table 1 and your equation, calculate the average thickness (height) of an M&M for each trial. Record your calculated values in Table 1. Hint: Students often forget that they must use the radius, and not the diameter, in the equation. Copy Table 1 into the assignment.…
Procedure: The intent is to measure the height and width of each brass weight so that the volume of the weight itself can be calculated. This goal can be achieved by using the Vernier Caliper to measure the irregular shape of the weight.…