The pressure of the gas in terms of its mean kinetic energy per unit volume E is equal to 2E/3 and Kinetic Energy is always proportional to temperature.

The super heated vapor acts as perfect gas and obeys all gas laws

Absolute zero pressure will occur when there is no molecular momentum

No liquid can exists at absolute zero pressure and absolute pressure can be attained at 0 Kelvin

Behavior of gas can be fully determined by four gas laws

For air ratio of specific heats is 1.4

Mono-atomic gas has highest ratio of specific heat = 1.66As per Joule’s law internal energy is function of temperature.

The same volume of all gases would represents their molecular weights

Gases have two value of specific heat. One is at constant pressure and one is at constant volume

The molecular weights of all the perfect gases occupy the same

volume under same conditions of pressure and temperature.

Work done in free expansion process is always zero

Work done for rigid container having gas, is zero

Heat and work are not properties of system

Absolute value of internal energy cannot be found but only change in internal energy can be found

On weight basis air contains 23 parts of oxygen

Heat and work are path functions

N.T.P means Normal Temperature Pressure

Change in the enthalpy is the heat supplied during constant pressure

Change in the internal energy is the heat supplied during constant volume

For isothermal process, process index is unity

The basis for measuring thermodynamic property of temperature is given by zeroth law of thermodynamics

First law of thermodynamic gives concepts of internal energy

Second law of thermodynamic gives concepts of entropy

Third law of thermodynamic deals with concept of zero entropy at absolute zero temperature of 0 Kelvin.

Throttling is the process during which cooling is produced

1 calorie = 4.186 Joule

Integration of pdv is non flow work

On volume basis air contains 21 parts of oxygen

Molecular weight of gas x characteristics gas constant = value of universal gas constant

For a perfect gas, internal energy and enthalpy are functions of

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