The observed emission data for the different elements did not look how they were supposed to. However the “peaks” for Hydrogen were found to be 534.52 and 631.24, 534.70 and 569.11 for Helium and 529.73 and 630.71 for Mercury. The Rydberg’s Constant found to 1.1x107 8.5x104 while the known constant is 10967758.34m-1. The percent error of 0.29% and the accuracy of this reading is 99.7. The slope and intercept of the linear regression line is -0.01 3.3x10-5 and 0.02x10-1 1.9x10-6 respectfully. The smaller elements like He and H have less peaks because they have less electrons than the bigger atoms and compound. Then the less electrons that are at that wavelength, the less smaller the peak. The observed Carbon Dioxide and neon spectra look extremely different than the NIST graphs just like the rest of the graphs for all of the elements differ from the references. …show more content…
The third peak consisted of all four colors and finally the large peak consists of green and blue. Orange dyes would probably have the more noticeable peaks at the shorter wavelengths because both red and yellow both have peaks at the shorter wavelengths. Purple dyes would most likely have one distinct peak for a short wavelength and then one distinct peak for the longer wavelength because red has peaks at short wavelengths and blue has peaks at long wavelengths. The data observed looks almost nothing like the D2L data. Errors that could have caused this could be incorrectly using the fiber optic tool to measure the light being emitted. Having the measuring device too close or too far away from the light, or perhaps holding it at an incorrect angle so it picked up an excessive amount of light from the environment. Another possible, but improbable, error could be that our spectrometer or our fiber optic could have been malfunctioning causing all the data to be
The cuvette was placed in the spectrophotometer with the arrows, on both the cuvette and the SpectroVis, facing the same side. After the recording, the cuvette was removed from the SpectroVis and the content was poured back into the original volumetric flask. The absorbance as well as the maximum wavelength of each solution was recorded in Table 3 and
One must look to see which element has both violet and orange spectra lines. It is shown that the element Cesium is the only element that has both violet and orange spectra lines. 2. Describe two different approaches to exciting the electrons that exist in elements. Offer a specific reason why scientists use different approaches to excite the electrons of different elements.
1. A number of different items were measured in this lab. For each of the following items, what did you find most challenging in making the measurement and how did that challenge affect the accuracy of the measurement? a) Length of the table b) Height of your partner c) Thickness of your finger
TEST: SOLUTIONS, ACIDS, AND BASES MULTIPLE CHOICE Select the answer that best completes the statement or that correctly answers the question. 1. The salt in water (only the solid) is the __________. a. Solvent c. Solute b. Solution d. Concentrate 2.
Hypothesis– Each light sources will have a different spectral, but there will be some similarities in the different light sources. Data Tables/ Graphs – Analysis Questions- Exercise 1: Building and Calibrating a Spectroscope Questions
Introduction The purpose of this lab was to compare galvanizing and creating brass with pennies using weight change, mass change and observations. The independent variables are the types of pennies used. The dependent variables are the characteristics, change in pennies, and mass of the pennies.
The cones that respond to the maximal sensitivity in the long wavelength light respond to orange-red color, cones that respond to the maximal sensitivity in a middle wavelength light respond to yellow-green color and cones that respond to the maximal sensitivity in the short wavelength light respond to blue color. Other colors could be sense through the combination of the three types color. Example, the formation of yellow with the combination of red and green color, formation of magenta with the combination of red and blue color, formation of cyan with the combination of blue and green color and formation of whiteness
Colour has three unique components which differ the chromatic from achromatic light, they are hue, saturation and intensity. Reporting a colour on these terms can be highly individual, but each can be illustrated by examining the spectrum. Naturally occurring colours are not just light at one wavelength, they contains a wide range of wavelengths. A colour’s "hue" tells which wavelength standout to be most prominent. The below spectrum likely to be perceived as bluish, even though it has wavelengths throughout
The colorimeter must be set to the correct wavelength setting. In this experiment, the wavelength must be set to blue so it can
However, any doubts regarding the results may be traced to a few elements of the experiment that lend themselves to possible error. The following factors may have contributed to potential errors in the experiment; the need to zero the machine between each of the readings in obtaining the absorption spectrum and the resulting peak wavelength, the precision with which a person can accurately adjust the needle on the spectrophotometer to zero is limited, not putting in the inaccurate amount of cobalt chloride or water into the substance, and getting oil from our fingers onto the
Abstract Bomb calorimeter was used in the experiment to determine the standard heat of combustion and formation of naphthalene. The heat capacity, C(s), of the bomb calorimeter obtained from a standard benzoic acid combustion was 10792.3±184.651 J/℃. Using this C(s), the enthalpy of combustion (∆Hcombust) of naphthalene was determined to be -5134.96±33.3433 kJ/mol. The final standard formation ((∆Hf, C10H8。) of naphthalene was 56.438±33.3433 kJ/mol, which was not very close to the theoretical value. Since only two runs were performed for each substance, more trials are needed to determine whether the error was random or systemic.
The spectrum gives two main pieces of information: the intensity of the peak and the frequency of the transition. The intensity can be used to identify the concentration of the compound, and the frequency can be used to identify the compound
Spectrum of XRD shows that the materials composition of the fine ground
Wavelength of light is determined by amount of energy released when electron drops to lower orbit. Light is coherent; all the photons have same wave fronts that launch to unison. Laser light has tight beam and is strong and concentrated. To make these three properties occur takes something called “Stimulated Emission”, in which photon emission is
The Calorimeter Calorimetry is the science that was first recognized by a Scottish physician and the scientist Joseph Black. It is related with determining the variation in energy of a system by measuring the heat transfer with the surrounding. It is derived from the word calor in Latin, which means the heat and the pressure. Calorimeter is the device used in the calorimetry science to measure the quantity of heat transported from or to an object. Heat is the transfer of thermal energy between two bodies that differs in temperature (Mc Graw Hill Education).