Engineering Thermodynamics
Coke is produced

When coal is first dried and then crushed to a fine powder by pulverizing machine
By heating wood with a limited supply of air to a temperature not less than 280°C
From the finely ground coal by moulding under pressure with or without a binding material
When coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel

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Engineering Thermodynamics
According to Avogadro's Hypothesis

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

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