Answer to Question #180916 in Mechanical Engineering for ajay

Question #180916

The gas equation is PV = nRT. If P the pressure is 2.0 atm, V the volume of the gas is 6 m3, R the gas constant is 0.08206 m3 atm mole-1 K-1 and T is 300 degrees Kelvin, what are the units of n and what is its numerical value?


1
Expert's answer
2021-04-14T07:43:12-0400

Q180916

The gas equation is PV = nRT. If P the pressure is 2.0 atm, V the volume of the gas is 6 m3, R the gas constant is 0.08206 m3 atm mole-1 K-1 and T is 300 degrees Kelvin, what are the units of n and what is its numerical value?


Solution:


please check the value of gas constant, R in the question again


I will first solve the problem using the information given in the problem.

Next I will solve the problem using correct value of 'R' .


Pressure, P = 2.0 atm.


Volume, V = 6.0 m3.


Gas constant, R = 0.08206 m3.atm/mol.K


Temperature, T = 300 K


plug all this information in the ideal gas equation, PV = nRT.




The units of n is 'mol' and the numerical value is 0.487.


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I will suggest you to check the question again.

The proper value of Gas constant ' R' is 8.206 *10-5 m3.atm/mol.K


Now I will solve the problem, using R = 8.206 *10-5 m3.atm/mol.K


Pressure, P = 2.0 atm.


Volume, V = 6.0 m3.


Gas constant, R = 8.206 *10-5 m3.atm/mol.K


Temperature, T = 300 K


plug all this information in the ideal gas equation, PV = nRT.





If you use the correct value of Gas constant 'R' then we will get

The units of n is 'mol' and the numerical value is 487.




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