- #1
JamesL
- 33
- 0
Not sure what I am doing wrong...
A chemical reaction takes place in a container
of cross-sectional area 100 cm2. As a result of
the reaction, a piston is pushed out through 20
cm against an external pressure of 567 torr.
What is the value for w for this reaction?
(Sign does matter.) Answer in units of J.
w = - (Pressure)(Change in Volume)
Cross sectional area = 100 cm^2 = .01 m^2
Change is piston distance = 20cm = .2 m
Pressure = 567 torr x 133.322 = 75593.574 Pa
Solution disregarding sign = [75593.574 kg/(m*s^2)][.01 m^2][.2 m]
---> 151.188 J
However this is coming up as incorrect.
Homework Statement
A chemical reaction takes place in a container
of cross-sectional area 100 cm2. As a result of
the reaction, a piston is pushed out through 20
cm against an external pressure of 567 torr.
What is the value for w for this reaction?
(Sign does matter.) Answer in units of J.
Homework Equations
w = - (Pressure)(Change in Volume)
The Attempt at a Solution
Cross sectional area = 100 cm^2 = .01 m^2
Change is piston distance = 20cm = .2 m
Pressure = 567 torr x 133.322 = 75593.574 Pa
Solution disregarding sign = [75593.574 kg/(m*s^2)][.01 m^2][.2 m]
---> 151.188 J
However this is coming up as incorrect.
