• Support PF! Buy your school textbooks, materials and every day products Here!

Thermodynamics isobaric question

  • Thread starter mercidian
  • Start date
  • #1
1
0
A sample of ideal gas at constant pressure is heated from -10 degrees C to 100 degrees C. The gas does 40.0J of work during this process. How many moles of gas are present? What is the pressure of the gas at 100 degrees C?

So far I've calculated the moles of gas present
T1 = -10 degrees C T2 = 100 degrees C W = 40.0J

W = p (V2 - V1)
40.0J = p (nRT2/p - nRT1/p) substitute V=nRT/p
40.0J = nRT2 - nRT1
40.0J = nR(100 - (-10))
n = 0.0437

Now i have no idea how to calculate the pressure. I know that the pressure is the same at T1 and T2. Any hints would be helpful :smile:
 

Answers and Replies

Related Threads on Thermodynamics isobaric question

Replies
1
Views
8K
  • Last Post
Replies
3
Views
6K
Replies
1
Views
2K
Replies
1
Views
12K
Replies
9
Views
7K
Replies
2
Views
8K
Replies
8
Views
1K
  • Last Post
Replies
2
Views
4K
  • Last Post
Replies
5
Views
3K
Top