Suppose there are 2 moles of a gas in a container of fixed size and the average spacing of molecules in the container is 4.0 nm.If an additional 14 moles of the gas are added to the container and thermal equilibrium is established,what is the new average spacing of the molecules?
A) 2.0 nm
B) 0.50 nm
C) 1.4 nm
D) 2.8 nm

Question

Quizplus · Accepted Answer

The average spacing of molecules is inversely proportional to the cube root of the number of molecules. So, when the number of moles increases by a factor of 7, the average spacing decreases by a factor of the cube root of 7, which is approximately 1.9.

Suppose There Are 2 Moles of a Gas in a Container