When ice is dropped in a glass of oil, why is it that no moisture appears, even after a long period of time?

Question

I asked a similar question before. But nobody seemed to understand the question.

Yes, there is moisture outside the water glass, and I know why. But the main thing here is...WHY IS IT THERE'S NO MOISTURE OUTSIDE A GLASS OF OIL?

Answer 1

when ice melts it simply moves to the bottom of the glass   because oil floats on the water and so does not give any chance to water molecules  to go beyond it and create moisture.

Answer 2

The oil acts as an insulator so the glass doesn't cool enough to condense water out of the air.

Answer 3

It will help to first explain why moisture collects on the outside of a glass with ice and water,  When you drop ice into water the first thing that happens as the ice begins to melt the temperature of the surrounding water drops to the freeze/melt:  point (32f, 0c).   The melting ice water then draws heat from its surroundings.  It's surroundings are the glass itself and the air over head.  In other words, the container cools down.  When there is sufficient moisture in the air and the glass is significantly cooler than the surrounding air, moisture will condense onto the cool glass.

Now if you drop ice into oil, the ice will begin to melt, but the ice is drawing its heat from the oil, not the glass.  This prevents the container from cooling significantly, so you are less likely to see condensation.