Exam 1: The Quantum World

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Carotene,which is partly responsible for the color of carrots,has 22 electrons in a conjugated system and a length of about 3 nm.The lowest energy transition in carotene is from n = ___ to n = ___.

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If a photon has an energy of 4.0 10-16 J,what will its frequency be,in Hz?

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Which of the following statements regarding electromagnetic radiation is true?

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What is implied about an electron in an atom when it is observed that it has discrete spectral lines?

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What is the energy of a mole of photons with a frequency of 3.2 1016 Hz?

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In 1.0 s,a 60 W bulb emits 11 J of energy in the form of infrared radiation (heat)of wavelength 1850 nm.How many photons of infrared radiation does the lamp generate in 1.0 s?

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Radiation with a wavelength of 2.2 mm is most likely in what part of the electromagnetic spectrum?

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Which of the following is a Lyman series line?

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What is the wavelength of radiation with a frequency of 2.3 1013 /sec?

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A photon with a frequency of 1.2 1015 Hz has what energy?

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The Bohr radius for an electron in the ground state of a hydrogen atom is 52.9 pm.The Bohr radius for an electron in the n = 2 state of He+ is

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In everyday life,we have no difficulty in measuring both the velocity and position of objects.True or false?

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The square of the amplitude of a wave determines the intensity of the radiation.True or false?

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A lawyer who received a speeding ticket argues that because of the Heisenberg uncertainty principle the radar reading is uncertain.The judge,who happens to have a science degree,rules against the lawyer.Which of the following statements is true?

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If radiation has a frequency of 3.1 1016 sec-1,what is its wavelength?

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What is the energy of a mole of photons with a frequency of 3.8 1014 /sec?

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Light of wavelength 242 nm ionizes a sodium ion in the gas phase; what is the ionization energy of sodium?

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What is the general wavelength of visible light?

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Of the following,which is a Balmer series visible band?

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How many joules of energy does a photon have with a frequency of 6.8 1015 Hz?

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