Question

a chemical reaction takes place in a container of cross-section area 100 cm^2. the container has a loosely fitted piston at one end. As a result of the reaction the piston is pushed out through 10 cm against an external pressure of 1 atmosphere. calculate the work done by the system

Answer 1

1. The problem statement, all variables and given/known data 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. 2. Relevant equations w = - (Pressure)(Change in Volume) 3. 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 



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Answer 2

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