2-23 - Spectroscopy Questions 012 Q13 Chapter 2 NOTE You...

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Unformatted text preview: Spectroscopy Questions: 012. Q13. Chapter 2 NOTE: You might find it advantageous to increase the slit width to about 1 or 2 millimeters. Now View the tube containing hydrogen gas. This is not very bright so you must view it quite closely. perhaps about 10 to 20 cm away. - Use your speetroscope calibration equation to determine the wavelength of the spectral lines that are prominent. 0 Be careful to record the color of the lines (as viewed through the spectroscopc), and the overall color of the emitted light (i.e., as viewed by the naked eye). Now use your spectroscope to observe a discharge tube filled with helium gas. o Note some differences between hydrogen’s emission spectrum and helium’s. Why were you encouraged to increase the slit width (above)? For only the hydrogen discharge tube make a chart of the following information: (a) color of the tube as viewed by eye (i.e., without a spectroscope) (b) color of each line as viewed through your spectroscope (c) calculated wavelength (d) accepted wavelength (Le. from some literature reference) (e) % error You will need your data on the hydrogen emission lines for homework. Therefore, record them below (and in your notebook, ofcgume) Line Color Calculated it turn! ...
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