Three boxes, each containing molecules in the gas phase, are illustrated below. Which box would you expect to have the highest pressure?
A) A
B) B
C) C
D) A and B have the same highest pressure.
E) A and C have the same highest pressure.

Question

Three boxes, each containing molecules in the gas phase, are illustrated below. Which box would you expect to have the highest pressure? 
A) A 
B) B 
C) C 
D) A and B have the same highest pressure. 
E) A and C have the same highest pressure.

Quizplus · Accepted Answer

Box B has the highest pressure because it has the most molecules in the smallest volume, leading to more collisions with the walls and therefore a higher pressure. Box A has fewer molecules than Box B, but a smaller volume, so it has a higher pressure than Box C which has more molecules but a larger volume.

Three Boxes, Each Containing Molecules in the Gas Phase, Are