Engineering Thermodynamics
According to Avogadro's law, for a given pressure and temperature, each molecule of a gas

Occupies same volume
Occupies volume inversely proportional to its specific weight
Occupies volume inversely proportional to its molecular weight
Occupies volume proportional to its specific weight

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Engineering Thermodynamics
The thermodynamic difference between a Rankine cycle working with saturated steam and the Carnot cycle is that

Rankine cycle is hypothetical
Heat is supplied to water at temperature below the maximum temperature of the cycle
A Rankine cycle receives heat at two places
Carnot cycle can't work with saturated steam

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