Which substance has AHf defined as O kJ/mol? A. H20 (s)
B. Ne (I)
C. F2 (g)
D. CO2 (g)

It’s C.

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?

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.

Which is a characteristic of the electron sea model for metallic bonding? molecular orbitals overlap to produce bands. electrons flow easily between metal nuclei. electrons are in fixed positions in the orbitals. atomic nuclei are arranged in an irregular pattern.