10. In the ground state, atoms of the elements in Group 15 of the Periodic Table all have the same number of A) filled energy levels (shells)
B) occupied energy levels (shells)
C) neutrons in the nucleus
D) electrons in the valence shell

it can be icreased by increasing pressure.

the reaction mixture contains some ammonia, plus a lot of unreacted nitrogen and hydrogen. the mixture is cooled and compressed, causing the ammonia gas to condense into a liquid. the liquefied ammonia is separated and removed. the unreacted nitrogen and hydrogen are then recycled back into the reactor .

distance, luminosity, brightness, radius, chemical composition, and temperature

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.