Imagine an alternate universe where the value of the Planck constant is 6.62607 x 10° J-s. In that universe, which of the following objects would require quantum mechanics to describe, that is, would show both particle and wave properties? Which objects would act like everyday objects, and be adequately described by classical mechanics? object quantum or classical? classical A turtle with a mass of 680. g, 22. cm long, moving at 2.5 cm/s. quantum O classical A bacterium with a mass of 5.0 pg, 4.0 pm long, moving at 3.00 pm/s. quantum classical A grain of sand with a mass of 140 mg, 850. um wide, moving at 2.00 mm/s. quantum classical A human with a mass of 59. kg, 2.0 m high, moving at 4.4 m/s. quantum

Imagine an alternate universe where the value of the Planck constant is 6.62607 x 10° J-s. In that universe, which of the following objects would require quantum mechanics to describe, that is, would show both particle and wave properties? Which objects would act like everyday objects, and be adequately described by classical mechanics? object quantum or classical? classical A turtle with a mass of 680. g, 22. cm long, moving at 2.5 cm/s. quantum O classical A bacterium with a mass of 5.0 pg, 4.0 pm long, moving at 3.00 pm/s. quantum classical A grain of sand with a mass of 140 mg, 850. um wide, moving at 2.00 mm/s. quantum classical A human with a mass of 59. kg, 2.0 m high, moving at 4.4 m/s. quantum

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Imagine an alternate universe where the value of the Planck constant is 6.62607 × 10-40 J.S. In that universe, which of the following objects would require quantum mechanics to describe, that is, would show both particle and wave properties? Which objects would act like everyday objects, and be adequately described by classical mechanics? object A raindrop with a mass of 3.0 mg, 0.8 mm wide, moving at 6.6 m/s. An eyelash mite with a mass of 9.1 µg, 260 pm wide, moving at 44. um/s. An alpha particle with a mass of 6.6 x 10-27 kg, 8.0 x 10 15 m wide, moving at 16. km/s. A car with a mass of 1300. kg, 4.6 m long, moving at 134.0 km/h. quantum or classical? classical O quantum oooooo O classical O quantum O classical O quantum O classical O quantum X S
Using the Bohr model of an electron orbiting a nucleus, the angular momentum of Earth's orbit around the Sun is about 2.67 x 1040 g m2 s−1. Using the Bohr quantization condition, what is the quantum number n for Earth's orbit? If the Earth transitions from this orbit to n-1 (emitting a graviton, which is the gravitational anagloue of the photon), how much energy would be released? Find the frequency of the graviton.
Is n = 3, l = 2, ml = 1, ms = 1⁄2 an acceptable set of quantum numbers for the electron in a hydrogen atom? Justify your answer.
What wavelength of radiation has photons of energy 6.12×10−19 J ? Express your answer with the appropriate units.
Electron microscopes operate on the fact thatelectrons act as waves. A typical electron kinetic energy is100 keV (1 eV 5 1.602 3 10219 J). What is the wavelength ofsuch an electron? (Ignore relativistic effects.)
Q 1 pla
Decide if the following set of quantum numbers is permissible. If not, indicate which value is wrong. n, l, ml, ms 2, 0, 0, +1/2
A ground state hydrogen atom absorbs a photon of light having a wavelength of 92.05 nm. What is the final state of the hydrogen atom?
True or false? In a hydrogen atom, an electron that passes from orbital 3s to 2p releases a photon of a different energy from an electron that passes from orbital 3d to 2s. Justify your answer in 1 sentence or 2.
Express the speed of the electron in the Bohr model in terms of the fundamental constants (me, e, h, 0), the nuclear charge and the quantum number n. Evaluate the speed of an electron in the ground states of He+ ion and U91+. Compare these speeds with the speed of light c. As the speed of an object approaches the speed of light, relativistic effects become important. In which kinds of atoms do you expect relativistic effects to be greatest?