- #1

pkpiotr517

- 10

- 0

Molar mass=mass of gas/mols of gas

n=N/N0

PV=nRT

Vrms^2=(3RT)/M

I used PV=nRT, solved for P, and found temperature by using the formula Vrms^2=3RT/M, solved for T.

So to clarify:

Vrms^2=3RT/M

T=Vrms^2(M) / 3R

T=( (260m/s )^2*(5.63e-26 kg/mol) ) / ( 3(8.31 J/(mol*K)) )

T=1.53e-22 K

(I found M by dividing the mass of the gas, by the number of moles ) (and I found the number of moles by dividing the number of molecules by Avogadro's constant)

To clarify this...

n=N/N0

n=5e23 molecules/6.02e23 moles

n=8.305e-1 moles

then I placed this in ...\/... to find the Molar Mass (M)

Molar Mass = Kg/Moles

M=4.68e-26 kg/8.305e-1 moles

M=5.634e-26

......... ...

Once I found the Temperature, I tried to find the pressure.

I used the formula: PV=nRT

Solved for P

P=nRT/V

Plugged everything in

P=( (8.305e-1 moles) (8.31 J/(mol*K)) (1.5279e-22 K) ) / (V)

I don't Know what the Volume should be or is... so I cannot solve for P

What am I doing wrong?