Question

3. A small drop of oil has a volume of 5 x 10-8m3. When it is put on a surface of some clean water, it forms a circular film of 0.1m2 in area. i. What is the size of a molecule of oil ii. State 2 assumptions you made in your calculations

Answer 1

Answer:

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Answer 2

Volume of drop = 5 x 10-8 m3

Area of circular film = 0.1m2

V = A x H

h=VA  

Size of molecule=5 x 10-8m/20.1m2

=5.0 x 10-7m

   

Atoms are spherical  

Mass uniformly distributes

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