A sample of an ideal gas at 600 Torr occupies 300ml at 27 degrees celsius. What is its pressure at 200ml and 127 degrees celsius?

Question

anonymous · Answer

I got 1200 Torr, just want to know if Im correct. 

(600 Torr)(300ml)(400k)
--------------------
(200ml)(300K)

Is my formula correct?

anonymous · Answer

Did you start with the general ideal gas law equation?

anonymous · Answer

Actually, if the amount of gas stays the same, you can just use a proportion...
Yes, I think what you did is correct. The consistent units will cancel and your temps are in absolute scale, so you should be in good shape.

anonymous · Answer

I did. The ideal gas law is 

(Pressure 1)(Volume 1) / (Temp 1) = (Pressure 2)(Volume 2) / (Temp 2)

I just feel my algebra is off. There are 4 other answers to the question,

anonymous · Answer

All looks legit to me.

anonymous · Answer

Ideal Gas Law: $$PV=nRT$$
nR is constant,
$$PV=kT \rightarrow k=\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2} \rightarrow P_2=\frac{P_1V_1}{T_1} \cdot \frac{T_2}{V_2}$$

anonymous · Answer

Why is V2 on the bottom now and T2 is at teh top?

anonymous · Answer

Cross-multiply to solve the proportion.