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## Homework Statement

A piston-cylinder device contains a mixture of .2kg of H

_{2}and 1.6kg of N

_{2}at 100kPa and 300K. Heat is now transferred to the mixture at constant pressure until the volume is doubled. Assuming constant specific heats at the average temperature, determine (a) the heat transfer and (b) the entropy change of the mixture

## The Attempt at a Solution

My multiple attempts included using equations from examples in the chapter. The only thing with the example is that its with air and not H

_{2}or N

_{2}. I dont know if this really makes a difference but I've tried m C deltaT to find the heat and gotten an answer of around 29kJ but my understanding of the problem is that I'm looking for the flow of the heat transfer in kJ/min which involves using the partial pressure and specific humidity. The main thing I'm lacking in that process is the I have no flow in kg/min. Any help would be much appreciated.

Matt