The Determination of Keq for FeSCN2+ Purpose: To determine the equilibrium constant Procedure: Part I - Preparing the solution 1)Get 10 test tubes 2)Prep the 5 reference solution test tubes. Mix each solutions using a stirring rod. Standard Volume of .200M Fe(NO3)2 Volume of .00020M KSCN solution Reference Solution #1 8.0mL 2.0mL Reference Solution #2 7.0mL 3.0mL Reference Solution #3 6.0mL 4.0mL Reference Solution #4 5.0mL 5.0mL Reference Solution #5 4.0mL 6.0mL 3)Using he burets transfer the appropriate volumes of each reagent to make the test solutions. Sample .0020M Fe(NO3)2 .0020M KSCN Distilled Water Test Solution #6 5.0mL 1.0mL 4.0mL Test Solution #7 5.0mL 2.0mL 3.0mL Test Solution #8 5.0mL 3.0mL 2.0mL Test Solution #9 5.0mL 4.0mL 1.0mL Test Solution #10 5.0mL 5.0mL 0mL 4) Mix each solution using a stirring rod 5)Measure the temperature of one of the solutions and record. Part II - Spectral Analysis 1)Ensure that the instrument has had time to warm up for 15 min.
Lab 2: Writing a Lab Report 1. Think of 10‐20 variables that may affect seed germination, recording them in Table 3. 2. From your list of variables in Table 3, select three to test. Form a hypothesis for why each affects seed germination.
Innate behavior is an unlearned, inherited fixed action pattern, while learned behavior is not inherited but gradually ascertained throughout the life span of a species. Methods and Materials Seven experimental apparatus’ were constructed, like the one in figure 1. Two petri dishes were cut so as to be connected at one end then glued together on a small portion of wood blocking. The petri dishes simulate the testing environment and the connected end allows the specimens to move freely in between scenarios. First the phototaxis experiment was conducted by placing five Armadillidium vulgare in each side of the petri dish for a total of ten in the overall created environment.
Name: Robert Christopher Date: 16/2/2011 ID: 0670000687 COMPARISON OF ARTERY AND VEIN Raw Data Table 1: Below are the results of the experiment completed through cutting down the vein and artery into a ring-like shape. A 10g-50g of mass is used to suspend the artery and vein; and measured it with a 1-meter ruler standing 90˚ on the table to distinguish how long it stretches with a specific mass weight. Average Length ± 0.05g/mm | Mass ± 0.05mm/g | Artery | Vein | | Trail 1 | Trial 2 | Average | Trial 1 | Trial 2 | Average | 0g | 393 | 377 | 385 | 370 | 374 | 372 | 10g | 392 | 376 | 384 | 368 | 372 | 370 | 20g | 391 | 375 | 383 | 366 | 370 | 368 | 30g | 390 | 374 | 382 | 364 | 368 | 366 | 40g | 389 | 373 | 381 | 362 | 366 | 364 | 50g | 388 | 372 | 38 | 360 | 364 | 362 | Data Presentation Table 2: Below are the results of the artery and vein’s length difference in mm. These results were known when the average results from the two trials were calculated. The results can be calculated with the following formula: "trial 1 + trial 2; then divide the result by 2 to get the average mean results”.
Using 1 ml micropipette add 1.0 MR in each four 10 ml volumetric flasks. 3. Prepare following MR solution in four flasks: flask 1: add 5 mL pH 4 buffer (graduated cylinder) and fill to the mark with water flask 2: add 5 mL pH 5 buffer and fill to the mark with water flask 3: add 5 mL pH 7 buffer and fill to the mark with water flask 4: add 1 mL 0.01M NaOH and fill to the mark with water. 4. Record the spectrum for these four solutions in range 400-700 nm.
ASA Institute Procedure 4 – 1 Quick Diff Staining Procedure Semester Spring 2010 The Class Section MED 215-M08 Sojin Park Dr. Victor Veloz Introduction The procedure that I am going to introduce is Quick Diff Staining Procedure. It is used for the differential count. After distinguishing 100 leukocytes, each of the five leukocytes are regarded as a percentage of the total 100 cells identified. Definition of the procedure Quick Diff Staining Procedure differentiates the distribution of the erythrocytes and five types of leukocytes on the basis of their characteristics, shapes, and sizes. Materials * Blood smear (On the slide with having well-feathered edge.)
8. Get the timer and time the isopods for 10 minutes. 9. Use the pencil and paper to record data of the isopods’ interactions. 10.
n. Base: The base supports the microscope. Question: Determine the total magnification given that you are using a compound microscope with the following objectives: 4X, 10X, 40X, and 100X. Assuming that the eyepiece contains a 10X power lens, the objective lens magnification would be 40X, 100X, 400X, and 1000X, respectively. 1. What is meant by the
The variables in this investigation include the independent variable, which is the environment, the dependent variable, which is the density and diversity of invertebrates and the controlled variables which include the number of vials at each location (10), the spaces between vials (5m), the amount of glycol/ethanol solution used (15ml) and how long the vials are left out (3 days). Materials: - 2x Permanent Markers - 30x Vials - Glycol/ethanol solution - Tape measure - Trowel - 15x petri dishes - 15x tweezers - Magnifying glass - Microscope Method: 1. Divide the class into three groups; with each group looking after a different transect line. 2. Pre-label 10 vials per transect (30 in total).
After (equal) allotted amount of time to allow the mung bean plants to grow, measure the stem of each plant using the ruler. Then average the height of each cup. Data Collected: Data Table (Produce a labeled table of your results including units of measurement.) Data Analysis: Calculations (Show any calculations you used in interpreting the results.) Graphs (Provide any labeled, suitably scaled graphs, to help interpret the data that you collected.)