Consider filling a gas cylinder with ethane from a high-pressure supply line. Before filling, the cylinder is empty (vacuum). The valve is then opened, exposing the tank to a 3-MPa line at 500K until the pressure of the cylinder reaches 3MPa. The valve is then closed. The volume of the cylinder is 50L. For ethane, use the truncated virial equation of state, in pressure: Z=PVm/(RT)=1+B’P with B’=-2.8 x 10^-8 m^3 /J

a. What is the temperature immediately after the valve is closed?
b. If the cylinder then sits in storage at 293K for a long time, what is the entropy change of the universe (from the original unfilled, state)?

answer:

6.3 is the answer

explanation:

because it is the ex

answer:

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Can I be Brainliest!!

One of the benefits of working with chlorinated polyvinyl chloride (CPVC) pipe is that it can be cut with a variety of different tools that don’t require any electricity or heat. However, different cutting methods are preferred over others, depending on the application.

When cutting CPVC pipe, it is important to make a square, flat cut. An uneven cut limits the bonding area and weakens the fitting.

To help you make the best possible cut, we’ve put together the following dos and don’ts when cutting CPVC pipe in different situations.