Which is not a possible value for the principal quantum number n?
a. 3
b. 7
c. 3/2
d. None of these
c
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A helium-filled balloon has a volume of 1 m3. As it rises in the earth's atmosphere, its volume expands. What will its new volume be (in m3) if its original temperature and pressure are 20°C and 1 atm, and its final temperature and pressure are ?40°C and 0.1 atm?
A. 4 B. 6 C. 8 D. 10 E. 1.5
In the double-slit experiment, the entire matter field or EM field instantaneously collapses to the single interaction point when the field interacts with the screen. This is an example of
A) quantum annihilation. B) quantum tunneling. C) quantum uncertainty. D) quantum interference. E) quantum nonlocality.
Carbon-14 has a half-life of 5730 years. You discover a single carbon-14 nucleus in your laboratory. What is the probability that it will decay in the next 24 hours?
A. 4.9 x 10-7 B. 3.3 x 10-7 C. 4.8 x 10-7 D. It cannot be known unless the age of the nucleus is known.
Matter Waves: An electron is moving with the speed of 1780 m/s. What is its de Broglie wavelength? (melectron = 9.11 × 10-31 kg, h = 6.626 × 10-34 J ? s)
A. 409 nm B. 302 nm C. 205 nm D. 420 nm E. 502 nm