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Question

Mercury has $m p=-38.8^{\circ} \mathrm{C}$ and $\mathrm{bp}=356.6^{\circ} \mathrm{C}$. What, if any, phase changes take place under the following conditions at $1.0$ atm pressure? (a) The temperature of a sample is raised from $-30^{\circ} \mathrm{C}$ to $365^{\circ} \mathrm{C}$. (b) The temperature of a sample is lowered from $291 \mathrm{~K}$ to $238 \mathrm{~K}$. (c) The temperature of a sample is lowered from $638 \mathrm{~K}$ to $231 \mathrm{~K}$.

Solution

VerifiedAnswered 1 year ago

Answered 1 year ago

Step 1

1 of 5$\textbf{Given:}$

```
* MP $= -38.8^{\circ}$ C
* BP $= 356.6^{\circ}$ C
```

From the given information, we know that solid mercury will become liquid at $-38.8^{\circ}$ C, then is in the gaseous phase at $356.6^{\circ}$ C and beyond.

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