D. I know that like the back of my hand
Answer is in the photo. I can't attach it here, but I uploaded it to a file hosting. link below! Good Luck!
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Answer:
A saturated vapour is one that is in balance with its own liquid. Space is considered to be unsaturated if it contains fewer vapours than the maximum amount it can retain at a given temperature. Saturated vapour pressure is unaffected by volume, although it rises as temperature rises.
Explanation: