Spherical drop of oil question

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Homework Statement


A spherical drop of oil, 1 mm in diameter, falls on a water surface. The oil spreads out to cover a circular patch of diameter 60 cm. The oil spreads out until it forms a uniform layer on top of the water, only one molecule thick. What is the thickness of this layer?


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The Attempt at a Solution


I have no idea how they want me to answer this. It states in the question that the layer is 1 molecule thick but I have no idea what type of oil it is so I don't know what thick a molecule of this oil is.
 

Answers and Replies

  • #2
mgb_phys
Science Advisor
Homework Helper
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That's what you are trying to find out!
it's a simple geometry question, the volume of oil doesn't change.
 

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