- #1

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- 0

Does anyone have a figure for this.

I've trolled the net for nearly 2 hours now with no success.

Any help or guidance much appreciated.

Bitman

- Thread starter bitman
- Start date

- #1

- 17

- 0

Does anyone have a figure for this.

I've trolled the net for nearly 2 hours now with no success.

Any help or guidance much appreciated.

Bitman

- #2

mgb_phys

Science Advisor

Homework Helper

- 7,774

- 13

At 1 atmosphere (gas)

T (k) density(mol/L)

250 0.050

275 0.045

300 0.041

325 0.037

350 0.035

375 0.032

400 0.030

450 0.027

500 0.024

At 10 atmospheres (liquid)

T (k) density(mol/L)

275 11.962

300 11.102

- #3

uart

Science Advisor

- 2,776

- 9

PV = NRT

with N and P held constant.

dV/V = dT/T

or dV/dT = V/T

- #4

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- 0

I'm really interested in the liquid properties. I can do the gas stuff (mostly, when I get the sums right :-0 ).

I'm interested in the change of density between 353k (448.9psi) and 293k(124.6 psi).

I thought as it was a liquid it was incompressable thus the pressure didn't matter. If so it should have a fixed coefficient of expansion.

Your figures, mgb_phys, at 10 atm seem to indicate -0.288% per degree C.

So assuming the pressure change is inconsequential I'm looking at a reduction in liquid density of 17.28%.

Thanks for the info and the time.

Please protest if you think these conclusions are incorrect.

Bitman

- #5

mgb_phys

Science Advisor

Homework Helper

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1Mpa

275 = 11.962

300 = 11.102

325 - gas

10Mpa

325 = 10.860

350 = 9.973

375 = 8.905

293K/124.6psi looks very close to boiling point