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1. Explain what is the wavelength of an electron whose linear velocity is 181.85 m/sec?
2. If all the energy is dissipated as light, explain how many photons per second are emitted by a 366 nm uv lamp rated at a power of 150 watts (1 watt = 1 J/sec)? Would a 150 watt tungsten lamp, which emits mainly visible light, produce more or fewer photons per second than the 366 nm lamp?
3. Compute in hertz the broadening Δν of transitions in HCN at 25 C due to the Doppler effect in regions of the spectrum typical of rotational transitions (10 cm71), vibrationaltransitions (1500 cm71) as well as electronic transitions (60 000 cm71).
4. Explain what is the value of kT in cm-1 at 300 K? Explain what is the value of nj/ni if state j is this many cm-1 above state i? Presume both states are non-degenerate.
assume that you wanted to prepare a small volume of purehydrogen by reaction of lithium metal with water. how many
a mixture of 2.00 moles of h2 3.00 moles of mh3 4.00 moles of co2 and 5.00 moles of n2 exert a total pressure of
A solution of salt (molar mass 90 g mol -1) in water has a density of 1.29 g/mL. The concentration of the salt is 35% by mass.
An atomic emission spectrum of hydrogen shows the following three wavelengths: 121.5 {\rm nm}, 102.6 {\rm nm}, and 97.23 {\rm nm}. Assign these wavelengths to transitions in the hydrogen atom
In some communities, products that contain phosphates are banned from sale because of pollution of well water, streams, and coastal bay. How could these salts enter the environment. How could the authorities test for the presence of phosphates in ..
Given the following boiling point data, which one of the liquids would you expect to have the HIGHEST vapor pressure at room temperature
110 mL of H_2O is initially at room temperature (22.0 degrees C). A chilled steel rod at 2.0 degrees C is placed in the water. If the final temperature of the system is 21.0 degrees C.
What is the rate of consumption of O2 in a combustion reaction carried out in a 11.00 L flask if 6.30 mmol of oxygen is consumed in 25.6 s?
When 1.00 mol of a pure liquid is vaporized at a constant pressure of 1.00 atm and at its boiling point of 324.8 K, 29.30 kJ of energy (heat) is absorbed and the volume change is +24.70 L. What is E for this process.
Carbon and silicon belong to the same group and are known to have similar properties. Do you think that silicon can replace the role that carbon plays
The vapor pressure of chlorine dioxide (ClO2) is 155 Torr at -22.75 ? C and 485 Torr at 0?C. What is the normal boiling point of chlorine dioxide?
What is the relationship between the ionization energy of an anion with a 1- charge such as F^- and the electron affinity of the neutral atom, F
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