Question

# a. A sample of water vapor in an enclosed cylinder has an initial pressure of 500 Pa at an initial temperature of $-0.01^{\circ} \mathrm{C}$. A piston squeezes the sample smaller and smaller, without limit. Describe what happens to the water as the squeezing progresses. b. Repeat part a if the initial temperature is $0.03^{\circ} \mathrm{C}$ warmer

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As the piston squeezes the sample the pressure increases.

The initial pressure is less than $0.006 \mathrm{a}\mathrm{t}\mathrm{m}$.

In chapter 15 we defined 1atm as 101,300 Pa.

So $500\displaystyle $\mathrm{P}$$\mathrm{a}$\cdot$\frac{1atm}{101,300Pa}$=0.005 atm.$ We now refer to the phase diagram in Figure 16.4.

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