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Determine bubble volume change with given temperature

  • Thread starter hummele
  • Start date
1
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1. Homework Statement

A 1-cm3 air bubble at a depth of 141 meters and at a temperature of 4 degrees Celsius rises to the surface of the lake where the temperature is 13.1 degrees Celsius, to the nearest tenth of a cm3, what is its new volume?


2. Homework Equations

P1V1/T1=P2V2/T2


3. The Attempt at a Solution

I have trying to use previous posts to help me, but I do not know where I am going wrong. I attempted using these numbers.

((1.013x105)+(1000x9.8x141)(1)(286.25))/(1.013x102)(277.15)

However, I don't know if I am supposed to use (1.013x105) or 1000 because they are not given in the original problem.
 
Last edited:

Answers and Replies

33,552
9,283
Please work with units, that makes things much easier. It looks like the brackets are wrong - something easy to spot if you work with units as they won't match there.

I guess the 102 in the denominator is a typo?

I think it does not matter which surface pressure you use, as long as you make it clear what you use. The effect is small and I guess for the rounded result both choices give the same value.
 
The P2 value is incorrect.
 

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