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- The units of ebullioscopic constant is _______.Explain alsoCarotenes are molecules with alternating CC and C=C bonds in which the electrons are delocalized across the entire alternating bond system. As such, the electrons can be approximated as being a particle-in-a-box. Lycopene is a carotene found in tomatoes and watermelon. Assuming that the alternating carbon-carbon bond system is 2.64nm wide: a What is the energy of the n=11 level? b What is the energy of the n=12 level? c What is the E between n=11 and n=12? d If, by the Bohr frequency condition, E=h, what frequency and wavelength of light corresponds to the transition from n=11 to n=12?
- Stefans law, equation 9.18, suggests that any body of matter, regardless of the temperature, is emitting energy. At what temperature would a piece of matter have to be in order radiate energy at a flux of 1.00W/m2? At the flux of 10.00W/m2? 100.00W/m2?Reduced mass is not reserved only for atomic systems. A solar system or a planet/satellite system, for example, can have its behavior described by first determining its reduced mass. If the mass of Earth is 2.4351024kg and that of the moon is 2.9951022kg, what is the reduced mass of the Earth-moon system? This is not to imply any support of a planetary model for atomsCalculate V for 1s of the H atom and compare it to the total energy.
- The noble gas emits light as a result of ionisation of gaseous State which noble gas ionises most readily and explain your Suggest two reasons why the noble gases become less ideal in their behaviour down the group from helium to Under what condition of temperature and pressure is the behaviour of real gases similar to ideal gases? Explain your answer.The diffraction of radiation can be used to determine the spacing between atoms. In practice, the wavelength of the radiation used should be restricted to a value which is of the same order of magnitude as the interatomic distances to be determined. Such experiments are commonly performed using X-rays (electromagnetic radiation), however a beam of subatomic particles, such as of neutrons or electrons, may also be used if their corresponding de Broglie wavelength is of the appropriate magnitude. Calculate the velocity of an electron (me = 9.10939×10-31 kg) having a de Broglie wavelength of 255.6 pm.Where in the figure is the region ofhighest electron density?
- The diffraction of radiation can be used to determine the spacing between atoms. In practice, the wavelength of the radiation used should be restricted to a value which is of the same order of magnitude as the interatomic distances to be determined. Such experiments are commonly performed using X-rays (electromagnetic radiation), however a beam of subatomic particles, such as of neutrons or electrons, may also be used if their corresponding de Broglie wavelength is of the appropriate magnitude. Calculate the de Broglie wavelength of a neutron (mn = 1.67493×10-27 kg) moving at one three thousandths of the speed of light (c/3000). Calculate the velocity of an electron (me = 9.10939×10-31 kg) having a de Broglie wavelength of 190.0 pm. (Enter at least 4 significant figures.)The diffraction of radiation can be used to determine the spacing between atoms. In practice, the wavelength of the radiation used should be restricted to a value which is of the same order of magnitude as the interatomic distances to be determined. Such experiments are commonly performed using X-rays (electromagnetic radiation), however a beam of subatomic particles, such as of neutrons or electrons, may also be used if their corresponding de Broglie wavelength is of the appropriate magnitude. Calculate the de Broglie wavelength of a neutron (mn = 1.67493×10-27 kg) moving at one six thousandth of the speed of light (c/6000).The diffraction of radiation can be used to determine the spacing between atoms. In practice, the wavelength of the radiation used should be restricted to a value which is of the same order of magnitude as the interatomic distances to be determined. Such experiments are commonly performed using X-rays (electromagnetic radiation), however a beam of subatomic particles, such as of neutrons or electrons, may also be used if their corresponding de Broglie wavelength is of the appropriate magnitude. Calculate the de Broglie wavelength of a neutron (mn = 1.67493×10-27 kg) moving at one six thousandth of the speed of light (c/6000). (Enter at least 4 significant figures.) The answer is not 0.79nm.