What is the energy, in eV, of the n = 3 state in hydrogen?
What will be an ideal response?
-1.5 eV
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The break-up of Pangaea had worldwide consequences with the exception of
A) the lowering of sea level. B) a rise in sea level. C) the divergence and evolution of new species. D) climate change.
The fact that many of the larger Jovian moons orbit nearly in the equatorial plane of their host world, moving in the same direction as their planet's spin, suggest that they
A) formed from a rotating disk of gas and dust like a miniature solar system B) were spun out from the rapidly spinning host world as it formed C) formed elsewhere in the solar system and were later captured D) were formed from a giant impact between the host world and another body
An airplane flying overhead drops a care package directly over Mike at rest in his Corvette. Neglecting air resistance, the package will land
A) behind Mike. B) upon Mike and his Corvette. C) well ahead of Mike and his Corvette.
Ion-dipole interactions are responsible for
a. the dissolving of salt in water. b. ice being less dense than water. c. the ease of electrolysis of water. d. metallic bonding in steel.