Heat transfer between two substances is affected by specific heat and the ? Chemical composition of the substances .
State of matter of the substances at room temperature.
Thermal equilibrium of the substances.
Amount of time and area of physical contact between the substances.

The size (radius) of an oxygen molecule is about 2.0 ×10−10m. make a rough estimate of the pressure at which the finite volume of the molecules should cause noticeable deviations from ideal-gas behavior at ordinary temperatures (t= 300k ). assume that deviatons would be noticeable when volume of the gas per molecule equals the volume of the molecule itself.