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Chemistry 14 Online
OpenStudy (anonymous):

****MEDAL AND FAN!!*** What does pressure measure? The number of molecules present? The temp of a substance the volume occupied by particles force of colliding particles @studygurl14 @perl

OpenStudy (perl):

Pressure is defined as force per unit area

OpenStudy (anonymous):

So molecules present? @perl

OpenStudy (perl):

thats the physics definition. but i think you are doing gas laws (chemistry)

OpenStudy (anonymous):

yep

OpenStudy (perl):

For an ideal gas, the pressure is directly proportional to the number of moles of gas present.

OpenStudy (perl):

The Kinetic Molecular Theory (KMT) says that the pressure is due to collisions with the walls of the container and depends on how many gas particles there are and how violent the collisions are. Since the energy depends only on the temperature, which doesn't change, the collisions won't be harder but adding gas will increase the number of collisions, thus increasing the pressure.

OpenStudy (anonymous):

soo..? :p

OpenStudy (anonymous):

so number of molecules present? @perl

OpenStudy (perl):

the question is worded strangely, is there any other information

OpenStudy (anonymous):

no

OpenStudy (anonymous):

Should I just go for number of molecules present? @perl

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