I'm having problems with questions like this... I'm sure how to go about solving it... an explaination to the working out would help. thanks

 

Calculate the volume of gas occupied by 3.6426 g of nitrogen at 45.00oC and 101.3 kPa given that value of the gas constant, R, is 8.314 J/K.mol.

I'm having problems with questions like this... I'm sure how to go about solving it... an explaination to the working out would help. thanks

 

Calculate the volume of gas occupied by 3.6426 g of nitrogen at 45.00oC and 101.3 kPa given that value of the gas constant' date=' R, is 8.314 J/K.mol.[/quote']

 

PV=nRT, and a mole of an ideal gas occupies 22.4L at STP

short and sweet!

just out of curiosity though, what would be closest to an "ideal gas" that we know of?

thanks for the help

- its probably argon

what would be closest to an "ideal gas" ?

 

what do u exactly mean by, 'an ideal gas'?

what do u exactly mean by, 'an ideal gas'?

 

my question exactly

An ideal gas is one where it basically makes things easy to calculate. I can't remember the specifics offhand, but things like all collisions between molecules are elastic, things like that.

the only thing I remember with ref to an "ideal gas" was that it should disappear at absolute zero, I`m don`t know if they meant have zero volume or what though, it was over 25 years ago! )

http://hyperphysics.phy-astr.gsu.edu/hbase/kinetic/idegas.html

 

An ideal gas has no intermolecular forces or inelastic collisions. Real gases only behave like ideal gases when they get to lower temperatures.

R, is 8.314 J/K.mol. grrrr and 101.3 kPa grrrr. atm and 0.0821 J/K.mol-1, btw how old is your teacher.

 

V = P / nRT

 

V= volume

 

n= number of moles

 

R = Gas constant (0.0821) or in your case 8.314 J.K.mol-1

 

T= Tempertaure (K)

 

 

Oh and as for Ideal gas, N at really low K has a volume of 22.362 L.

- its probably argon

 

I think any of the noble gases will act like ideal gases, since they don't form molecules. Others will too, to varying degrees.

R, is 8.314 J/K.mol. grrrr and 101.3 kPa grrrr. atm and 0.0821 J/K.mol-1, btw how old is your teacher.

 

he's about 65 I'm guessing... you could probably guess he's very old fashioned in his teaching methods

 

thanks for the help!

Yes i could tell, by using KPa as pressure and 8.314 as the gas constant, your welcome anytime.