[rvf263]

Hi all,
I feel stupid asking for help with such easy problems, but I'm just learning so I have to do what I have to do...lol
I've done this problem a couple times and still can't get the correct answer. I thought I was setting them up right to solve, but apparently not.
Anyway, I would appreciate any help to show where I'm going wrong.

"A gas sample is cooled from 100. oC. The gas sample volume was reduced from 2.00 L to 1.20 L. To what temperature in Celsius was the sample of gas cooled?"

I set it up to solve for T₂ = V₁/V₂ x T₁

T₂ = 2.00L / 1.20L x 373

I think I'm close, but I can't see what I'm doing wrong.


Thanks,
Robert

[Mitch]

Maybe the gas wouldn't of been cooled if you compress it.

[rvf263]

So is the problem set up correctly?

[pkothari13]

Well, you know the law is V₁/T₁ = V₂/T₂

Say 2.0 L  = V₁, 373 = T₁, 1.20 L = V₂ and T₂ = (x+273).

Therefore,

2/373 = 1.2/(x+273)
x + 273 = (1.2)(373)/2
x = (1.2)(373)/2 - 273
x = -49.2 ^o C