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## Homework Statement

Given a tank filled with gas, you are to pump out a given amount and find the final state of the tank. Given the volume, gas (non-ideal), amount of gas in tank, flow rate, temperature and pressure, all at state 1. We can find density at state 2 from the tables, but we need another quantity. So we can also solve for enthalpy.

## Homework Equations

E_out,mass = [itex]\int h + V/2 + gz dm[/itex]

The KE and PE can be neglected due to high flow rate, so the equation simplifies to

E_out,mass = [itex]\int h dm[/itex]

but since h is not constant I am confused how to integrate this, and find h.

## The Attempt at a Solution

I am trying to integrate numericaly but am not sure how to approch finding the intermidiate values of h.

Thank you for the help.

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