Volume of 1 g Mole Gas at 356.2K & 1 atm: 2.92x10-2 L

In summary, we are given the ideal-gas equation of state PV = NkT, where N = nNA is the number of molecules in the volume V at pressure P and temperature T and n is the number of moles of the gas. We are asked to calculate the volume (in L) occupied by 1 g mole of the gas at atmospheric pressure and a temperature of 356.2K. Using the values for 1 atm, Avogadro's constant, and k, we can solve for the volume and get 29.236 L.
  • #1
hackett5
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Homework Statement


A gas obeys the ideal-gas equation of state PV = NkT , where N = nNA is the number of molecules in the volume V at pressure P and temperature T and n is the number of g moles of the gas.
Calculate the volume (in L) occupied by 1 g mole of the gas at atmospheric pressure and a temperature of 356.2K

1 atm = 1.013 × 105 N/m2
Avogadro’s constant is 6.02214 × 1023
k = 1.38065 × 10-23 Nm/K.

Homework Equations



P V = N k T
= n NA * k T

The Attempt at a Solution


I tried working it, but the answer I come up with is wrong. Can someone point me in the right direction?

(1.013 x 105 Nm/K)( V ) = (1 x 10-3 kg)(1.38065x10-23 Nm/K)(6.02214 x1023)(356.2 K)

V = 2.92 x10-5 m3
= 2.92 x10-2 L
 
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  • #2
Well, I reworked the problem and found my mistake. I got this to work out right:
(1.013x10^5)(V)=(356.2)(6.02214x10^23)(1.38065x10^-23)
V=.029236 m^3
V=29.236 L
 

FAQ: Volume of 1 g Mole Gas at 356.2K & 1 atm: 2.92x10-2 L

How did you calculate the volume of 1 g mole gas at 356.2K and 1 atm?

The volume was calculated using the ideal gas law equation: V=nRT/P, where V is the volume, n is the number of moles, R is the gas constant, T is the temperature in Kelvin, and P is the pressure. In this case, n=1 mole, R=0.0821 L atm/mol K, T=356.2K, and P=1 atm. Plugging in these values gives us V= 1 mole x 0.0821 L atm/mol K x 356.2K / 1 atm = 2.92x10-2 L.

What is the significance of the temperature and pressure in this calculation?

The volume of a gas is directly proportional to its temperature and inversely proportional to its pressure. This means that as the temperature increases, the volume of the gas will also increase, and as the pressure decreases, the volume will also increase. In this case, the given temperature and pressure are used to calculate the volume of 1 mole of gas.

Is the volume of 1 g mole gas at 356.2K and 1 atm a constant value?

No, the volume of a gas is not a constant value. It can change depending on the temperature, pressure, and amount of gas present. However, the ideal gas law assumes ideal conditions and is used to calculate an estimated value for the gas volume.

What is the unit of measurement for the volume of 1 g mole gas at 356.2K and 1 atm?

The unit of measurement for the volume in this calculation is Liters (L). This is a commonly used unit for measuring the volume of gases.

Can this calculation be used for any gas at any temperature and pressure?

No, the ideal gas law is based on certain assumptions and is most accurate for low pressures and high temperatures. It also works best for gases that behave ideally, such as monatomic gases like helium or neon. For more complex gases, other equations and corrections may need to be applied to calculate the volume accurately.

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