The diagram above illustrates trapped air in a syringe placed in water that is gradually heated. It is observed that the piston rises as the temperature of the water rises. Which of the following statements explains this observation?
-
A.
frequency of collision of trapped air molecules with walls of the syringe is more -
B.
molecules of trapped air expands more -
C.
speed of the trapped air molecules decreases -
D.
number of molecules of trapped air increases