Question

What will happen if oil is used in hot water bag instead of water? Explain with reason.
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Answer 1

Answer:

The oil is less dense than the water, so it rises to the top. ... Because there's more space between the molecules, a volume of hot water has fewer molecules in it and weighs a little bit less than the same volume of cold water. So hot water is less dense than cold water.

Answer 2

Answer:

oil gets hoter than water in a short period of time. because it's ignition temperature is lower than water. so there is a chance for the bag to melt.