Simple Ideal Gas Law but i keep getting it wrong

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Homework Help Overview

The discussion revolves around the Ideal Gas Law, specifically applying the equation PV=nRT to find the volume (V) given pressure, number of moles, gas constant, and temperature. The original poster expresses confusion over their calculated volume result.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to solve for volume using the Ideal Gas Law but questions their conversion from cubic meters to liters. Other participants suggest reconsidering the conversion factor used.

Discussion Status

Some participants have provided hints regarding unit conversion, noting that the original poster's answer may be incorrect due to a misunderstanding of the conversion from cubic meters to liters. The discussion reflects an ongoing exploration of the problem without a definitive resolution.

Contextual Notes

The original poster mentions needing to express the answer with two significant figures, which may influence their calculations and conversions.

acg7160
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Homework Statement



P=1.5 atm; n=2 mols, R=8.314; T=250 K; V=?

Homework Equations


PV=nRT
i converted p into Pa and got 151987.5 Pa.


The Attempt at a Solution


I plugged in all of the numbers and got V=0.027 L but it keeps saying my answer is wrong. It says answer for 2 sig figs. I am not sure what I am doing wrong. Help please?
 
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your answer is in m^{3}. You need to convert to liters. Hint:

<br /> 1 \, \mathrm{L} = 1 \, \mathrm{dm}^{3}<br />
 
acg7160 said:
I plugged in all of the numbers and got V=0.027 L but it keeps saying my answer is wrong. It says answer for 2 sig figs. I am not sure what I am doing wrong. Help please?
I think something went wrong with your conversion from m3 to liters. There are 1000 liters in a m3 (not 1 000 000 -- that would be ml per m3). :wink:

[Edit: Oops, I see Dickfore beat me to the answer.]
 
Thanks I got it right!
 

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