1. The problem statement, all variables and given/known data 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? 2. Relevant equations 3. 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.