The work of a gas

[joeyz123]

1. The problem statement, all variables and given/known data

Question: The volume of an ideal gas is compressed from 4.0L to 2.0L under a constant pressure of 850 Pa. How much work is done on the gas?

2. Relevant equations

W=-P(Change in volume)

3. The attempt at a solution

I keep coming out with -1.7 which I know is incorrect.

[Dadface]

1.Don't forget the unit of work.
2.Do you think that the work done on the gas is negative or could it be positive?