Per unit mass in the context of "Volume (thermodynamics)"

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⭐ Core Definition: Per unit mass

In the natural sciences, including physiology and engineering, the qualifier specific or massic typically indicates an intensive quantity obtained by dividing an extensive quantity of interest by mass. For example, specific leaf area is leaf area divided by leaf mass.Derived SI units involve reciprocal kilogram (kg), e.g., square metre per kilogram (m⋅kg); the expression "per unit mass" is also often used.

In some fields, like acoustics, "specific" can mean division by a quantity other than mass.

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👉 Per unit mass in the context of Volume (thermodynamics)

In thermodynamics, the volume of a system is an important extensive parameter for describing its thermodynamic state. The specific volume, an intensive property, is the system's volume per unit mass. Volume is a function of state and is interdependent with other thermodynamic properties such as pressure and temperature. For example, volume is related to the pressure and temperature of an ideal gas by the ideal gas law.The physical region covered by a system may or may not coincide with a control volume used to analyze the system.

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Per unit mass in the context of Specific energy

Specific energy or massic energy is energy per unit mass. It is also known as gravimetric energy density, which is not to be confused with energy density, which is defined as energy per unit volume. It is used to quantify, for example, stored heat and other thermodynamic properties of substances such as specific internal energy, specific enthalpy, specific Gibbs free energy, and specific Helmholtz free energy. It may also be used for the kinetic energy or potential energy of a body. Specific energy is an intensive property, whereas energy and mass are extensive properties.

The SI unit for specific energy is the joule per kilogram (J/kg). Other units still in use worldwide in some contexts are the kilocalorie per gram (Cal/g or kcal/g), mostly in food-related topics, and watt-hours per kilogram (W⋅h/kg) in the field of batteries. In some countries the Imperial unit BTU per pound (Btu/lb) is used in some engineering and applied technical fields.

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LINKED FROM (PARENTS)
← Specific energy ← Volume (thermodynamics)
LINKS TO (CHILDREN)
Natural sciences → Physiology → Engineering → Intensive quantity → Extensive quantity → Mass → Specific leaf area → Leaf → Derived SI unit → Multiplicative inverse → Kilogram → Square metre →