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https://worksheets.beyondlabz.com/multiembedq.php?id=7490-7491-7492-7493-7494-7495-7496-7497-7498-7499-7500

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Chrome File Edit View History Bookmarks s Profiles Tab Window Help G LO 4 Melissa Alejandro Q Sun Sep 3 10:06 PM ... Advanced%20Rutherford%20C x * 468.pdf X 468.pdf.pdf x 1-3 Rutherford's Backscattering x + * @ File | /Users/jhunn/Downloads/468.pdf.pdf * & IM Update : Canvas Chempendix - De... G Google Word | Microsoft 3... Open Al Human Physiolog... C chegg Home | Microsoft... GroupMe Canvas/ harbor co... 8 Beyond Labz Portal f Emission spectra |... 468.pdf.pdf 1 / 3 100% + 1 Rutherford Backscattering A key experiment in understanding the nature of atomic structure was completed by Ernest Rutherford in 1911. He set up an experiment that directed a beam of alpha particles (helium nuclei) through a gold foil and then onto a detector screen. He observed that alpha particles were not only emerging in the direction that he expected, but that he could detect alpha particles at all angles, even straight backwards. He described this as ". . . almost as incredible as if you fired a 15-inch shell at a piece of tissue paper and it came back and hit you." He suggested that the experiment could be understood if almost all of the mass of an atom was concentrated in a small, positively charged central nucleus. In this experiment, you will make observations similar to those of Professor Rutherford. 1. Start Virtual ChemLab. Open the Quantum lab. Set up the Rutherford experiment by placing the alpha- particle source on the optics table, pointed at the foil holder with a gold foil, and placing the phosphor screen behind the gold foil to detect the alpha particles coming through the foil. 2. Turn on both the alpha source and the phosphor screen. Observe the screen with the alpha-particle beam shining directly through the foil and into the phosphor screen. What do the different signals on the screen mean? 3. Now change the detector to a different location. (If you don't see a signal for a position, you might have rending searches to turn on the persist button, and wait for a few minutes.) blancpain swa What differences do you see in the signal?_ hurricanes tro jaylen warren How many distinct locations can you put the detector in?_ royal caribbea How does the signal depend on the angle formed by the source/foil/detector combination? Vivek Ramas American busine bioluminesce 4. Using the persist button, it is possible to estimate the number of particles that hit the screen as a function of angle. You can do this by counting the particles that hit the screen over a given length of time. lax airport eva Now graph this rate (in particle hits per second) as a function of angle zozobra burni texas news 42,942 SEP 3 atli 4 OChrome File Edit View History Bookmarks s Profiles Tab Window Help G LO 4 Melissa Alejandro Q Sun Sep 3 10:06 PM ... Advanced%20Rutherford%20C x * 468.pdf X 468.pdf.pdf x 1-3 Rutherford's Backscattering x + * @ File | /Users/jhunn/Downloads/468.pdf.pdf * & IM Update : Canvas Chempendix - De.. G Google Word | Microsoft 3... Open Al Human Physiolog... C chegg Home | Microsoft... GroupMe Canvas/ harbor co... 8 Beyond Labz Portal f Emission spectra |... 468.pdf.pdf 2 / 3 100% + O Hits/second N Angle (degrees) rending searches blancpain swa hurricanes tro jaylen warren What percentage of the particles is being scattered backwards? royal caribbea Vivek Ramas 5. Assuming that scattering backwards means that the alpha particle hits a nuclei head on, and that the American busine metal foil is 0.001 cm thick, estimate the diameter of a gold nucleus. bioluminesce Note: The atomic diameter of a gold atom is about 2.88 x 10" m. lax airport eva Calculations: zozobra burni texas news 42,942 SEP 3 atv EChrome File Edit View History Bookmarks s Profiles Tab Window Help G LO 4 Melissa Alejandro Q Sun Sep 3 10:06 PM ... Advanced%20Rutherford%20C x * 468.pdf X 468.pdf.pdf x 1-3 Rutherford's Backscattering x + * @ File | /Users/jhunn/Downloads/468.pdf.pdf * & IM Update : Canvas Chempendix - De.. G Google Word | Microsoft 3... Open Al Human Physiolog... C chegg Home | Microsoft... GroupMe Canvas/ harbor co... 8 Beyond Labz Portal f Emission spectra |... 468.pdf.pdf 3 / 3 100% + 0.00001 layers = 2.88 x 10-10 Anucleus (# scattered / sec) / layers A atom 100,000 d nucleus = d aton # scattered / sec 100,000 x layers Gold nucleus diameter: 6. If R is the radius of an atomic nucleus, To is the radius of a nucleon, and A is the atomic number, show how R can be approximated by R= ro4 . 7. Given that the value of ro is approximately 1.4 fm, calculate the size of the gold nucleus. rending searches Expected size of gold nucleus: blancpain swa How well does your previous calculation from your measurements agree with this expected value? hurricanes tro jaylen warren Why is your measured value not the same as the expected value? royal caribbea Vivek Ramas American busine bioluminesce lax airport eva zozobra burni texas news 42,942 SEP 3 city MAE