Explanation
Mass and volume of the gas will remain same, so density will also remain same.
The latent heat of vaporisation is always greater than latent heat of fusion because in liquid to vapour phase change there is a large increase in volume. Hence more heat is required as compared to solid to liquid phase change.
When state is not changing ΔQ = mcΔθ
At boiling point saturation vapour pressure becomes equal to atmospheric pressure.Therefore, at 100oC for water. S.V.P = 760 mm of Hg (atm pressure).
Latent heat is independent of configuration. Ordered energy spent in stretching the spring will not contribute to heat which is disordered kinetic energy of molecules of substance.
Boiling occurs when the vapour pressure of liquid becomes equal to the atmospheric pressure. At the surface of moon, atmospheric pressure is zero, hence boiling point decreases and water begins to boil at 30oC.
At boiling point, vapour pressure becomes equal to the external pressure.
When pressure increases boiling point also increases.
Thermostat is used in electric apparatus like refrigerator, iron etc for automatic cut off. Therefore, for metallic strips to bend on heating their coefficient of linear expansion should be different.
The volume of matter in portion AB of the curve is almost constant and pressure is decreasing. These are the characteristics of liquid state.
In the given graph CD represents liquid state.
The horizontal parts of the curve, where the system absorbs heat at constant temperature must depict changes of state. Here the latent heats are proportional to lengths of the horizontal parts. In the sloping parts, specific heat capacity is inversely proportional to the slopes.
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