Replace the ramp as in Figure 3.1. Figure 3.1: Equipment Setup Mark with pencil Photogate Use a plumb bob to determine the point directly below where the ball will leave the edge of the table after rolling down the ramp. Measure the distance from the floor to the top of the table at the point where the ball leaves the table and record this value as dy. Ramp Ramp To measure the position where the ball will strike the floor after rolling down the ramp, tape a piece of plain paper onto the floor with a piece of carbon paper on top. The impact ® LED comes ON LED goes OFF Figure 3.2: Measuring Dd 9 Photogate Timers 012-06379A of the ball will leave a clear mark for measuring
A ball was diameter was taken of the ball (in cm). The projectile launcher had to be leveled by the inclinometer. Afterwards, using the projectile ball, and the ram rod, the projectile had to be shot onto the clip board with the carbon paper attached to it. The geometric center of the trials was taken; this height was the initial height of the projectile. The launcher had to be relocated to an appropriate distance that will let the projectile strike the lower portion of the target.
Place a 1.0 cm piece of magnesium ribbon (get from instructor) in a clean/dry test tube. Using a plastic pipette, carefully add 10 drops of 6.0 M or 3.0 M hydrochloric acid to the test tube. Record your observations. Make sure you feel the bottom of the test tube. 5a.
5. Compute a linear least-squares-fit of the calibration data and plot the resulting line on the same graph as the calibration data. Comment on the linearity of the pressure transducer and scannivalve. Part 3: Calibration of the Tunnel 1. Connect the micromanometer (calibrated in Part 2) across the wind-tunnel contraction in order to measure the static pressure drop.
Then you put the remaining liquid (neutral component mixture) through the suction filtration funnel to isolate the crystals. After 10-15 minutes, the crystals will be dry and you can weigh them and find their melting point. How is the neutral component of your 3-compound mixture isolated from the final methylene chloride solution? 16 of 22 4/16/12 9:15 PM StudyBlue Flashcard Printing of Lab Final 2211L UGA http://www.studyblue.com/servlet/printFlashcardDeck?deckId=... Name the four active ingredients that we will be testing for in the TLC of Analgesics lab: Ibuprophen Caffeine Acetaminophen Acetylsalicylic acid What solvent system will you be using to dissolve the common analgesics (power) in preparation for TLC spotting? Methylene chloride: ethanol (1:1 solution) What solvent system will you be using to "develop" your TLC plates in the TLC of Analgesics lab?
* We kept the foam block (metal in the box) at the end of the ramp. On the jack(an equipment which is used to vary heights), the top of the ramp was placed on it. * The Light gates detector was placed at the finishing point of the ramp. * Like in method 1, the five different heights : 0.10m, 0.15m, 0.20m, 0.25m and 0.30m were taken. * The final speed was recorded by the light gate detector about three times for each height.
The first test tube will be control, the second will be substrate and indicator dye, the third will be dilute extract, the fourth will be the same contents as the second, the fifth will be medium concentration of extract, the sixth will be the same contents as the second, and the seventh will be concentrated extract. 3) Add stock solutions to each tube using the corresponding graduated 5 ml pipette or dispensing device. 4) Adjust the spectrometer to zero absorbance at 500nm. Pour contents of test tube 1 into a cuvette. ) Make sure to keep time, read the spectrometer, and record the data.
Place the clean cuvette containing the “yellow” sample into the spectrometer, orienting the cuvette so that the clear sides of the cuvette line up with the white arrow in the cuvette. Click the “Collect” button on the LoggerPro software to begin collecting spectrum data. After a few seconds, the spectrum should appear on the software. Click “Stop” to end the data collection. Repeat the steps used to collect the spectrum data from the “yellow” sample for the “green” and “blue” solutions.
Suggest two reasons for this change. Task 2 Press back but not clear and change the number of chips to 10 but leave the acid concentration at 1.0 mol/dm3 . Click start and take readings approximately every 3 seconds (by clicking the take readings button) until the mass reaches 0.0 g. Stop the reaction immediately. Plot these results on the same grid as the results of your first experiment. How does the rate of reaction in Task 2 compare with the rate in Task 1?
14. Begin your stopwatch at zero time, holding it in your left hand to begin timing. 15. In your right hand hold the pipette with HCl and squeeze the HCl into well #1 and start timing with your stopwatch. 16.