If the number of molecules in an air parcel was fixed and the volume of the parcel was to decrease, then which of the following would result?
A)The mass would increase.
B)The density would increase.
C)The mass would decrease.
D)The density would decrease.

Question

Quizplus · Accepted Answer

Density is defined as mass per unit volume. If the number of molecules stays constant but the volume decreases, then the mass of the air parcel would also stay constant. Therefore, the density of the air parcel would increase as the volume decreases.

If the Number of Molecules in an Air Parcel Was