Engineering Thermodynamics
According to Avogadro’s law

The product of the gas constant and the molecular mass of an ideal gas is constant
Equal volumes of all gases, at the same temperature and pressure, contain equal number of molecules
The sum of partial pressure of the mixture of two gases is sum of the two
All of these

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Engineering Thermodynamics
The specific heat at constant volume is

The amount of heat required to raise the temperature of unit mass of gas through one degree, at constant pressure
The amount of heat required to raise the temperature of unit mass of gas through one degree, at constant volume
The amount of heat required to raise the temperature of 1 kg of water through one degree
Any one of the above

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