1LoT, heat needed to raise the temperature of oxygen.

  • #1
160
0

Homework Statement


A container holds 1.50 g of oxygen at a pressure of 9.00 atm.

How much heat is required to increase the temperature by 108^\circ C at constant pressure?

C_p (specific heat of oxygen for an Isobaric process) = 29.2


Homework Equations



1LoT for Isobaric process.
Q=n * C_p * delta T



The Attempt at a Solution



So, plugging things in, with 1.5/16 to get the mols, got me to 295.65J. Plugging this in to the online homework system gave me a 'WRONG'. So trying different degrees for different sigfigs and rounding gave me nothing. So finally, it just gave me the answer... which was 148J, or almost exactly half of my calculations.

So this leaves me with one of two issues. Either I plainly forgot something which was a divide by two, or the answer is half of what it should be. I want to know if I missed something big for two reasons:
A. So I don't do it again.
B. In case I am right, I can challenge my grade on this.

On a side note, I haven't been here for a long time, so what is used these days to put in equations in the 'pretty format'. Is it still LaTex of something like that?
 

Answers and Replies

  • #2
rl.bhat
Homework Helper
4,433
8
While converting in to mol, consider one molecule of oxygen, and its molecular weight is 32.
 

Related Threads on 1LoT, heat needed to raise the temperature of oxygen.

Replies
4
Views
600
Replies
1
Views
644
Replies
1
Views
3K
Replies
5
Views
1K
Replies
1
Views
2K
  • Last Post
Replies
2
Views
3K
Replies
11
Views
20K
  • Last Post
Replies
4
Views
2K
Top