Engineering Thermodynamics
The value of the product of molecular weight and the gas characteristic constant for all the gases in M.K.S. unit is

427 kgfm/mol °K
848 kgfm/mol °K
8314 kgfm/mol °K
29.27 kgfm/mol °K

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Engineering Thermodynamics
Mond gas is obtained by

Partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
Passing air and a large amount of steam over waste coal at about 650°C
Passing steam over incandescent coke
Carbonisation of bituminous coal

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