The air cell increases in size during incubation at a rate that depends on temperature and humidity as moisture evaporates from the egg. The drawing shows the normal size of an egg's air cell at 7, 14, and 18 days of incubation. Size of the air cell in the egg on the 7th, 14th, and 18th day of incubation.
A specific heat capacity is the amount of energy necessary to increase the temperature of a kilogram of that substance by one kelvin. Molar heat capacity is the amount of energy necessary to raise one mole of substance by one kelvin degree. One mole of a substance is exactly 6.02x10 23 atoms or molecules of that substance.
partial molar quantities can be succinctly described as the effect that a change in a single component has on the particular thermodynamic property. the molar volume of water Vm is about 18 cm3/mol. Thus, if we add a mole of water to a larger body of water, it's volume will increase by 18 cm3.