map7s
Dec4-06, 03:51 PM
1. The problem statement, all variables and given/known data
A system expands by 0.67 m^3 at a constant pressure of 105 kPa. Find the heat of the system if its internal energy decreases by 1710J.
2. Relevant equations
Since P=constant:
deltaU=Q-W
W=PdeltaV
3. The attempt at a solution
I tried plugging in the numbers to the equation for W and then plugging that value into the first equation to solve for U, but I didn't get the correct answer and I'm not sure where I went wrong.
A system expands by 0.67 m^3 at a constant pressure of 105 kPa. Find the heat of the system if its internal energy decreases by 1710J.
2. Relevant equations
Since P=constant:
deltaU=Q-W
W=PdeltaV
3. The attempt at a solution
I tried plugging in the numbers to the equation for W and then plugging that value into the first equation to solve for U, but I didn't get the correct answer and I'm not sure where I went wrong.