Question

What work is done by a system on its environment when an ideal gas is maintained at a constant pressure of 200 newtons/meter2 during an isobaric process, while the volume decreases by 0.2 cubic meters?

A. 40 joules
B. 1,000 joules
C. -40 joules
D. -1,000 joules

Answer 1

a. 40 joules is INCORRECT on PLATO!!!!!

Step-by-step explanation:

Answer 2

As we know that work done by external environment is given as

`W = P\Delta V`

here we know that

P = 200 N/m^2

`\Delta V = 0.2 m^3`

now we will have

`W = P\Delta V`

`W = 200 N/m^2 (0.2 m^3)`

`W = 40 J`

so work done by external atmosphere will be 40 J

so correct answer will be

A. 40 joules