Engineering Thermodynamics
First law of thermodynamics

All of these
Provides relationship between heat, work and internal energy
Does not enable to determine change in entropy
Enables to determine change in internal energy of the system

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Engineering Thermodynamics
According to Avogadro's Hypothesis

Gases have two values of specific heat
The molecular weights of all the perfect gases occupy the same volume under same conditions of pressure and temperature
The sum of partial pressure of mixture of two gases is sum of the two
Product of the gas constant and the molecular weight of an ideal gas is constant

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