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15 mol/h of steam 1 (gas, at 1.1 atm and 0oC) containing 25% (mol basis) propane...

15 mol/h of steam 1 (gas, at 1.1 atm and 0oC) containing 25% (mol basis) propane and rest butane is mixed with a second stream (gas, 1.1 atm and 70o C) containing 40% (mol basis) propane and rest butane. The output stream is 40 mol/h (gas, 1.1 atm). The relative enthalpies as a function of temperature (in oC) are

H (J/mol) for propane = 91 x T

H (J/mol) for butane = 121 x T

a) What is the composition of the output stream?

b) What is the temperature of the output stream, assumining no heat exchange with the surrounding?

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