Laboratory Report on the Reaction of Flames Towards Medals  Introduction The purpose of the flame lab was to identify a set of flame-test color standards for selected metal ions‚ relate the colors of a flame test to the behavior of excited electrons in a metal ion‚ observe spectral lines using diffraction grating‚ and to identify an unknown metal ion by using a flame test. My hypothesis for the lab was that most of the flames when sprayed with a solution will be a orange-red color. The
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Name CH 204 DateExperiment 3: Atomic Spectroscopy Introduction The purpose of the atomic spectroscopy lab experiment was to investigate the relationship between visible light‚ which is the visibly observable range of electromagnetic radiation and the change in energy levels of an element. The line spectrum that was seen in the spectroscope was the evidence of excited atoms emitting electrons and radiating a spectrum of light as it moved from a higher energy state back down to a lower energy level
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Chemistry 2500- Exercise C4 The Emission Spectrum of Atomic Hydrogen Objective The purpose of this lab was to calculate an experimental value for the Rydberg constant and then the ionization energy for the hydrogen atom. These values will be obtained by using a prism spectrograph to measure the wavelength value for a section of the visible line spectrum of atomic hydrogen. Theoretical Background When H+ combines with an electron it forms it’s excited state‚ H. This excited atom
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Calorimetry and Specific Heat Tessa Williams Chemistry 111 11/13/13 Abstract: In this experiment‚ the specific heat and the density of an unknown metal was determined in order to identify the unknown metal. The average specific heat of the unknown metal was 0.197˚C and was determined using a calorimeter. The density of the unknown metal was 6.57 g/mL and was determined using a cylinder and displacement. Using the specific heat value of the unknown metal and its density‚ it
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Wavelength (l) and Frequency (n) Relationships c=ln ‚ where l is wavelength in meters n is frequency in hertz‚ 1/s or s-1 c=3.0 x 108m/s (the speed of light in a vacuum) Typical question #1- What is the frequency of red light with a wavelength of 690.nm? (1m=109nm) First- l is wavelength in meters‚ so convert nm to meters 690.nm ( 1m )=6.90 x 10-7m 109nm Now we can rearrange the equation above and solve for frequency‚ since
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Christine Woelfel-Monsivais 10/13/14 Chem 4448.13 Lab 4: Gaussian Calculations Introduction The purpose of the lab was to gain a better understanding of the Gaussian calculations and see how the obtained calculations can be used to explore the chemistry of the atoms. In this lab several molecules were created and given specific bond lengths before running a Gaussian test for optimization and frequency. Through this test the vibrational frequency‚ force constant‚ reduced mass and point group were
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Introduction: The objective of the lab was to determine the amount of energy absorbed by a material during fracture. Another goal of this lab was to learn how to use impact-testing equipment and procedures. The lab materials included a specimen‚ which consists of a bar of either 6061-T6 Aluminum or 2024 Aluminum having a notch that was machined and an apparatus made up of a pendulum to impact the notched specimen. Procedure: The apparatus’ dimensions and the mass of the pendulum were measured and
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Heat Heat is the transfer of energy from a hot object to a colder object‚ such as when toasting a slice of bread. The heat transfers onto the slice of bread which results in warm toast. When the slice of bread is heated‚ many things change; for example‚ the texture turns crunchy‚ the bread hardens‚ and the colour darkens. Where does the toast get its heat from? The toaster. Toaster A toaster is an electric small appliance designed to toast sliced bread by exposing it to heat. When a slice of bread
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INTRODUCTION Gas exchange is the movement of respiratory gases across a membrane through diffusion. Diffusion is the process of which the respiratory gases across the gas exchange membrane (oxygen from the environment into the body‚ carbon dioxide from the body to the environment). Using the concentration gradient along the gas exchange surface. For gas exchange to occur these three Features are needed; the gas exchange surface needs to be moist so that the oxygen and carbon dioxide can dissolve
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Name Instructor Course Date of Submission Waves on a String Abstract The principal objective of this lab was to study the conditions required for the creation of standing waves. The experiment was based on the principal of superposition‚ where a second wave exerted on a tight‚ stretched string and combined with the reflected wave. Results Table 1: Data from the Experiment Loops λ (m) Mass (kg) Tension‚ T (N) √T (N) Fcalc. FStroboscope (Hz) V (ms-1) µ 2 1.50 0.250 2.45 1.565 57.443 179.96 86.164
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