How many moles are in 1.50 x 10^23 atoms of F?

(2 decimal places)

Bose-einstein condensation occurs at what temperature?

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?