Now remove the 3 snap conductors, places an S there and substitute the 100 uf capacitors. Repeat steps 2-5 with the new circuit and record the new time values under Capacitance 2 column in Table 1. Part 2: 7. Now using the same material from the lab kit, create another circuit using the same materials but starting with the 100uf
CER Labs 2-3 Figure 1. Friedel-Crafts Acylation. Claim: An acetyl group was efficiently introduced to ferrocene by Friedel-Crafts Acylation (Figure 1). We isolated our crude yield while comparing 2 purification techniques: column chromatography and recrystallization. TLC, NMR, and IR spectroscopy were used throughout the process to identify ferrocene and acetylferrocene in addition to evaluating the levels of purity.
Discussion Week one- During the first week of this experiment we used a Spectronic 20 to measure the light absorbance and the percent of light transmitted. A Spectronic 20 is a machine that measures the amount of light that passes through the solution (Lewiston, 2014). For week one the goal of the experiment was to find the analytical for KMnO4. To work the Spectronic 20, it first must be turned on and allowed time to warm up. On the menu screen we selected to record percent of light transmitted to be displayed.
Equation 1: Absolute Error = Experimental Value – Accepted Value Equation 2: Standard Deviation: Equation 3: Density (ρ) = Mass (m) / Volume (V) Equation 4: General Methods and Materials: In this experiment, the materials used were provided by California State University, Fresno chemistry stockroom. We used a lab coat and lab goggles. The materials used was a 10mL volumetric flask, and an electric balance. Procedure: In order to begin the experiment we need to understand our objectives. Know how to use an electronic balance, calibrate glassware, and know how to use a volumetric flask, calculate density and know how to calculate the percent error.
5 Electroencephalography (EEG) sensors Fig.6 EEG Fabricated Headset The sensor sends the analog brainwave signal into the instrumentation amplifier circuit. C.Instrumentation Amplifiers The amplitude of analog brainwaves is in between the range of 150 – 250 micro volts (μV). This is very low. For processing, at least amplitude above 2 volt is needed. For this a high gain and low noise amplifier is needed.
NEO Five Factor Inventory (NEO-FFI). NEO-FFI-3 is a 60-item version of the NEO-PI-3, made by McCrae & Costa (1992) will be used to measure the five personality domains i.e. Neuroticism, Extraversion, Openness, Agreeableness, and Conscientiousness (12 items per domain) while using a 5-point Likert-type scale, ranging from strongly agree to strongly disagree. b. Test Anxiety Inventory (TAl).
For n =2, there are two values allowed for l. The possible values of l are l=0 and l=1because this energy level is above the wells of l=0 and l=1and below l=2 (green) and l=3 (violet). In other words, there is only one possible orbital (1s) for the first energy level (n=1)). The existence of other superior orbitals (1p,1d,etc) is forbidden by the fact that their energy wells (in which they lie) are above the n=1n=1 energy. Figure 1: Sketch where n = 1 PART C: Sketch just the l = 0 effective potential. Add the locations of the n = 1,2,3 energy levels to your sketch.
Method Prior to the experiment, the LabQuest must be set up and the conductivity probe must be calibrated. Calibrate the conductivity probe connected to a LabQuest using a solution of known conductivity. In this experiment, a solution with a conductivity of 1000 μS/cm was used. Choose “Calibrate” from the menu and choose “Calibrate Now”. Then submerge the conductivity probe into the standard solution and type in the known value of the solution; 1000 in this case.
The ultraviolet and infrared wavelengths are invisible to human eye and the luminous intensity doesn’t count here. The watt of IR radiation is almost zero. Thus UV and IR LEDs don’t have lumen units. Relationship between supply voltage of LEDs and emitted wavelength The minimum voltage Vmin which required to cause photon emission, and we measure the wavelength of the emitted photons and use it to calculate the photon energy hf, we always find that eVmin < hf. Some of the photon energy is supplied by thermal energy.
13) Set the spectrometer to a wavelength of 530 nanometers. 14) Place the cuvettes (numbers 1-6) with the appropriate substance and record it’s reading in the data table. 15) After each cuvette was tested, place the distilled water sample (Cuvette zero) to reset the spectrometer and to ensure that the scale is calibrated and repeat for each cuvette test. Data/Results: Tube Number Concentration Of CoCL2 (Mg/ML) CoCL2 Stock (ML) Distilled Water (ML) Spectrometry Reading at