Engineering Thermodynamics
According to Dalton's law, the total pressure of the mixture of gases is equal to

Greater of the partial pressures of all
Sum of the partial pressures of all divided by average molecular weight
Sum of the partial pressures of all
Average of the partial pressures of all

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Engineering Thermodynamics
Coke is produced

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
When coal is first dried and then crushed to a fine powder by pulverizing machine

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