Fourteen grams of nitrogen, N2, (N, atomic mass 14 amu) contains ________.
A) 1 mole of nitrogen atoms
B) 0.5 moles of nitrogen atoms
C) 0.25 moles of nitrogen atoms
D) Not enough information is given
Question 2
Why is the surface area of a gecko's foot so extensive?
A) A gecko, like all amphibians, needs extensive surface area under foot for stability on land as well as mobility in water.
B) A gecko's foot acts like a large dipole and thus allows for ion-dipole interaction in water.
C) The greater the surface area the greater the number of induced dipole-induced dipole forces of attraction that can occur between the gecko's foot and the surface.
D) The extensive surface area, once charged by the gecko's body, allows for the dipole-dipole attraction of every contact surface.
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