PDA

View Full Version : Chemistry Gas Laws


student54321
Oct16-11, 09:15 PM
1. The problem statement, all variables and given/known data
People who are angry sometimes say that the feel as if they will explode. If a calm person with a lung capacity of 3.5L and a body temp of 36C gets angry, what will the volume of the persons lungs be if their temp rises to 39C.


2. Relevant equations
V1/T1 = v2/T2


3. The attempt at a solution
I did it like this:
Declared variables; v1=3.5L, v2 = *?*, T1 = 36C, T2=39C

put them into the formula; 39(3.5) = 36(V2)
and ended up getting 3.79L instead of the correct answer which is 3.53L.

Obviously I have zero idea of what I am doing if I get an answer wrong. Only answer if you understand what you're talking about. Thanks.

Ygggdrasil
Oct16-11, 09:57 PM
When using gas laws, you should always use absolute temperature (temperature in kelvins)! Otherwise, the way you set up the calculation is correct.