Assume you add 10 mL of water in an evacuated and sealed container held at 25°C. Which of the following would decrease the vapor pressure?
I) adding a nonvolatile solute
II) halving the size of the container
III) removing some liquid
1. I and II
2. II only
3. I and III
4. I, II, and III
5. I only
6. III only
7. II and III
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