Ionization gauges for pressure measurement (see Section 5.7) can be manipulated by changing the voltage of the
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Ionization gauges for pressure measurement (see Section 5.7) can be manipulated by changing the voltage of the electron collection grid (see Figure 5.11). Referring to Table 6.5, if the voltage is set to yield electron energies of 1200 kJ/mol, determine what elements the gauge would not be able to detect. Given the ability to vary this energy, describe how you would design an apparatus that could distinguish between sodium and magnesium atoms.
Figure 5.11
Table 6.5
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Chemistry For Engineering Students
ISBN: 9780357026991
4th Edition
Authors: Lawrence S. Brown, Tom Holme
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