The image above represents free volume of polymer.

To compute for free volume of polymer, two essential parameters are needed and these parameters are **specific volume (V)** and** volume of solidly packed molecules (V _{s}).**

The formula for calculating free volume of polymer:

V_{f} = V – V_{s}

Where:

V_{f} = Free Volume of Polymers

V = Specific Volume

V_{s} = Volume of Solidly Packed Molecules

Let’s solve an example;

Find the free volume of polymer when the specific volume is 30 and the volume of solidly packed molecules is 10.

This implies that;

V = Specific Volume = 30

V_{s} = Volume of Solidly Packed Molecules = 10

V_{f} = V – V_{s}

Vf = 30 – 10

Vf = 20

Therefore, the **free volume of the polymer **is **20.**

**Calculating the Specific Volume when the Free Volume of Polymer and the Volume of Solidly Packed Molecules.**

V = V_{f} + V_{s}

Where;

V = Specific Volume

V_{f} = Free Volume of Polymers

V_{s} = Volume of Solidly Packed Molecules

Let’s solve an example;

Find the specific volume when the free volume of polymer is 24 and the volume of solidly packed molecules is 12.

This implies that;

V_{f} = Free Volume of Polymers = 24

V_{s} = Volume of Solidly Packed Molecules = 12

V = V_{f} + V_{s}

V = 24 + 12

V = 36

Therefore, the **specific volume **is **36.**

**Calculating the Volume of Solidly Packed Molecules when the Free Volume of Polymer and the Specific Volume.**

V_{s} = V – V_{f}

V_{s} = Volume of Solidly Packed Molecules

V_{f} = Free Volume of Polymers

V = Specific Volume

Let’s solve an example;

Find the volume of solidly packed molecules when the free volume of polymer is 28 and the specific volume is 8.

This implies that;

V_{f} = Free Volume of Polymers = 28

V = Specific Volume = 8

V_{s} = V – V_{f}

V_{s} = 28 – 8

V_{s} = 20

Therefore, the** volume of solidly packed molecules** is **20.**

Nickzom Calculator – **The Calculator Encyclopedia** is capable of calculating the free volume of polymer.

To get the answer and workings of the free volume of polymer using the **Nickzom Calculator – The Calculator Encyclopedia. **First, you need to obtain the app.

You can get this app via any of these means:

**Web** – https://www.nickzom.org/calculator-plus

To get access to the **professional **version via web, you need to **register** and **subscribe **for** NGN 1,500 **per** annum** to have utter access to all functionalities.

You can also try the **demo **version via https://www.nickzom.org/calculator

**Android (Paid)** – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator

**Android (Free)** – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator

**Apple (Paid)** – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8

Once, you have obtained the calculator encyclopedia app, proceed to the **Calculator Map, **then click on **Polymer & Textile**** **under **Engineering****.**

Now, Click on **Free Volume of Polymer**** **under **Polymer & Textile**

The screenshot below displays the page or activity to enter your values, to get the answer for the free volume of polymer according to the respective parameters which is the **specific volume (V)** and** volume of solidly packed molecules (V _{s}).**

Now, enter the values appropriately and accordingly for the parameters as required by the **specific volume (V)** is **30 **and** volume of solidly packed molecules (V _{s})** is

**10**.

Finally, Click on Calculate

As you can see from the screenshot above, **Nickzom Calculator**– The Calculator Encyclopedia solves for the free volume of polymer and presents the formula, workings and steps too.