Posted by **Don** on Tuesday, November 30, 2010 at 5:20am.

a container of 2.00 moles of an ideal gas as 1000 K undergoes a constant pressure and volume process in which the number of moles is increased to 5moles. what is the final temperature of the gas.

How do I start this? Do I somehow use the ideal gas law?

- Chem -
**Dr Russ**, Tuesday, November 30, 2010 at 6:40am
Use PV=nRT

so R=P1V1/n1T1

and R=P1V1/n2T2

R=P1V1/n1T1=P1V1/n2T2

n1T=n2T2

- Chem -
**Don**, Tuesday, November 30, 2010 at 6:56am
I got the answer to be 400. But can you explain to me those formulas? I'm still a bit confuse on how you got them. Where do these P1 and P2 and T1 and T2 come from

- Chem -
**Dr Russ**, Tuesday, November 30, 2010 at 9:07am
The original formula is

PV=nRT

for the question given we have a set of starting conditions

P=P1

V=V1

n=n1

T=T1

hence

P1 x V1=n1 x R x T1

which rearranges to

R=P1V1/n1T1

the second set of conditions is

P=P1

V=V1

(because P1 and V1 are constant in the question)

T=T2

N=n2

so

R=P1V1/n2T2

as R is the same in both cases

R=P1V1/n1T1=P1V1/n2T2

which rearranges to

n1T=n2T2

## Answer this Question

## Related Questions

- chemistry - Ideal Mixed Gas Law problems 1. What is the pressure generated by a ...
- Physics - Consider an ideal gas enclosed within a container with a moveable ...
- chemistry - If I contain 3 moles of gas in a container with a volume of 60 ...
- chem - A flexible container at an initial volume of 8.15 L contains 2.51 mol of ...
- Chem - A flexible container at an initial volume of 5.12 L contains 7.51 mol of ...
- Chem - To what temperature in K must a variable volume container of helium gas ...
- Maths - One tenth kilogram of Argon is contained in a piston-cylinder assembly. ...
- physics - A 22.0-L tank of carbon dioxide gas (CO2) is at a pressure of 9.40 105...
- pressure - a flexible container at an initial volume of 7.14L contains 9.51mol ...
- Calculus- Please Help! - Very confused with this question. Amy help would be ...

More Related Questions