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Gas is contained in a 8.00 L vessel at a temperature of 20.0⁰ and a pressure of 9.00 atm. Determine the number of moles of gas in the vessel. How many molecules are in the vessel?

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SouthernRider

Answer:

3moles

Explanation:

Given that Volume of the vessel (V)=8L

Pressure of the vessel (P)=9 atm

Temperature of the vessel (T)=20°C=293K         (∵K=273+°C )

Now we know that every ideal gas follows

PV=nRT

[tex]n=\frac{PV}{RT}[/tex]

We know that R=0.082057 [tex]L.atm.K^{-1} .mole^{-1}[/tex]

Now

[tex]n=\frac{9\times 8}{0.082057\times 293}[/tex]

n=3moles

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