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Why is the temperature 4'C mentioned in defining density of water in CGS system?
Wiki User
∙ 10y ago
When water in liquid form is cooled, the molecules come closer and closer together, increasing its density to a maximum at 4 degrees Celsius.
(Further cooling slightly decreases the density until Zero dgrees Celsius. At that temperature, water molecules start sticking together in rings of six molecules. These take up more room than molecules simply bunched together, so ice is less dense than liquid water.)
Wiki User
∙ 10y ago
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What the free energy will be if the temperature is kept uniform in a system?
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Temperature is a physical property of matter that quantitatively describes common notions of hot and cold. It generally tells us how fast molecules are moving with respect to each other. Temperature is related to the entropy of a system; formally defining it would require knowledge of statistical thermodynamics.
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Density is an intrinsic property of each type of material, defined as the total mass divided by the total volume. Obviously, two samples of the material which have the same mass and same volume will have the same density, but that is not that answer to this question. This question is about the thermodynamic state of a material and the answer is temperature and pressure. The thermodynamic state of a system is a set of properties that are reproducible when the thermodynamic variables have been specified. Density is one such property. Specifying the temperature, pressure and specifying the quantity and type of material of a system determines density at equilibrium. The equilibrium condition is critically important in that assertion. It is a fundamental premise of thermodynamics that the state of a simple system at equilibrium can be completely characterized by specifying two independent property variables, such as temperature and pressure, and the quantities of the chemical constituents. Any system then with the same thermodynamic state has the same intrinsic properties such as density, heat capacity, thermal conductivity, viscosity, and other characteristics.
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The substance will be compressed (increase in density) and if the compression is adiabatic, the temperature will go up since there is work being done on the system.
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What is the term defining a malicious attempt to render a networked system unusable?
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What is the unit of density and unit of relative density?
In SI system, unit of density is kg/m3 But no unit for relative density as it is the ratio of density of the material to that of water
