# How to Calculate and Solve for Permeability | Mass Transfer

The image above represents permeability. To calculate permeability, five essential parameters are needed and these parameters are Constant (A), Partial Pressure (Po), Activation due to Permeation (Qp), Gas Constant (R)Â andÂ Temperature (T).

### The formula for calculating permeability:

P = APo0.5Â . e-Qp/RT

Where:

P = Permeability
A = Constant
PoÂ = Partial Pressure
QpÂ = Activation due to Permeation
R = Gas Constant
T = Temperature

Let’s solve an example;
Find the permeability when the constant is 12, the partial pressure is 22, the activation due to permeation is 10, the gas constant is 14 and the temperature is 2.

This implies that;

A = Constant = 12
Po = Partial Pressure = 22
Qp = Activation due to Permeation = 10
R = Gas Constant = 14
T = Temperature = 2

P = APo0.5Â . e-Qp/RT
Then, P = 12(22)0.5Â . e-(10)/(14)(2)
P = 12(4.69) . e-10/28
P = 56.28 . e-0.357
So, P = 56.28 (0.699)
P = 39.38

Therefore, theÂ permeabilityÂ isÂ 39.38.

### How to Calculate Permeability Using Nickzom Calculator

Nickzom Calculator â€“Â The Calculator Encyclopedia is capable of calculating the permeability.

To get the answer and workings of the permeability using the Nickzom Calculator â€“ The Calculator Encyclopedia.Â First, you need to obtain the app.

You can get this app via any of these means:

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To get access to theÂ professionalÂ version via web, you need toÂ registerÂ andÂ subscribeÂ forÂ NGN 2,000Â perÂ annumÂ to have utter access to all functionalities.
You can also try theÂ demoÂ version viaÂ https://www.nickzom.org/calculator

Apple (Paid)Â â€“Â https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8
Once, you have obtained the calculator encyclopedia app, proceed to theÂ Calculator Map,Â then click onÂ Materials and MetallurgicalÂ underÂ Engineering.

Now, Click onÂ Mass TransportÂ underÂ Materials and Metallurgical

Now, Click on Permeability underÂ Mass Transport

The screenshot below displays the page or activity to enter your values, to get the answer for the permeability according to the respective parameter which is the Constant (A), Partial Pressure (Po), Activation due to Permeation (Qp), Gas Constant (R)Â andÂ Temperature (T).

Now, enter the values appropriately and accordingly for the parameters as required by the Constant (A) is 12, Partial Pressure (Po) is 22, Activation due to Permeation (Qp) is 10, Gas Constant (R) is 14 and Temperature (T) is 2.

Finally, Click on Calculate

As you can see from the screenshot above,Â Nickzom Calculatorâ€“ The Calculator Encyclopedia solves for the permeability and presents the formula, workings and steps too.