H2+O2 what is the answer

How does the motion of particles in a gas change as the gas cools

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.