How to Calculate and Solve for Exposure Rate of Chemicals | Material Selection

The image above represents the exposure rate of chemicals. To calculate the exposure rate of chemicals, four essential parameters are needed and these parameters are Diffusion Coefficient (D), Area of Contact (A), Safety Factor (SA) and length (l).

The formula for calculating the exposure rate of chemicals:

re = DASA/l

Where:

re = Exposure Rate of Chemicals
D = Diffusion Coefficient
A = Area of Contact
SA = Safety Factor
l = Length

Let’s solve an example;
Find the exposure rate of chemicals when the diffusion coefficient is 10, the area of contact is 14, the safety factor is 12 and the length is 8.

This implies that;

D = Diffusion Coefficient = 10
A = Area of Contact = 14
SA = Safety Factor = 12
l = Length = 8

re = DASA/l
That is, re = (10)(14)(12)/8
re = 1680/8
re = 210

Therefore, the exposure rate of chemicals is 210.

Calculating the Diffusion Coefficient when the Exposure Rate of Chemicals, the Area of Contact, the Safety Factor and the Length are Given

D = re x l / ASA

Where;

D = Diffusion Coefficient
re = Exposure Rate of Chemicals
A = Area of Contact
SA = Safety Factor
l = Length

Let’s solve an example;
Find the diffusion coefficient when the exposure rate of chemicals is 20, the area of contact is 8, the safety factor is 4 and the length is 2.

This implies that;

Master Every Calculation Instantly

Unlock solutions for every math, physics, engineering, and chemistry problem with step-by-step clarity. No internet required. Just knowledge at your fingertips, anytime, anywhere.

re = Exposure Rate of Chemicals = 20
A = Area of Contact = 8
SA = Safety Factor = 4
l = Length = 2

D = re x l / ASA
D = 20 x 2 / 8(4)
So, D = 40 / 32
D = 1.25

Therefore, the diffusion coefficient is 1.25.

Read more: How to Calculate and Solve for Diffusion Coefficient at Constant Temperature | Diffusion in Alloying

Calculating the Area of Contact when the Exposure Rate of Chemicals, the Diffusion Coefficient, the Safety Factor and the Length are Given

A = re x l / DSA

Where;

A = Area of Contact
re = Exposure Rate of Chemicals
D = Diffusion Coefficient
SA = Safety Factor
l = Length

Let’s solve an example;
Find the area of contact when the exposure rate of chemicals is 10, the diffusion coefficient is 6, the safety factor is 8 and the length is 3.

This implies that;

re = Exposure Rate of Chemicals = 10
D = Diffusion Coefficient = 6
SA = Safety Factor = 8
l = Length = 3

A = re x l / DSA
A = 10 x 3 / 6(8)
So, A = 30 / 48
A = 0.625

Therefore, the area of contact is 0.625.

Calculating the Safety Factor when the Exposure Rate of Chemicals, the Diffusion Coefficient, the Area of Contact and the Length are Given

SA = re x l / DA

Where;

SA = Safety Factor
re = Exposure Rate of Chemicals
D = Diffusion Coefficient
A = Area of Contact
l = Length

Let’s solve an example;
Find the safety factor when the exposure rate of chemicals is 14, the diffusion coefficient is 4, the area of contact is 10 and the length is 7.

This implies that;

re = Exposure Rate of Chemicals = 14
D = Diffusion Coefficient = 4
A = Area of Contact = 10
l = Length = 7

SA = re x l / DA
SA = 14 x 7 / 4(10)
Then, SA = 98 / 40
SA = 2.45

Therefore, the safety factor is 2.45.

Read more: How to Calculate and Solve for Chemical Breakthrough Time | Material Selection

Calculating the Length when the Exposure Rate of Chemicals, the Diffusion Coefficient, the Area of Contact and the Safety Factor are Given

l = DASA / re

Where;

l = Length
re = Exposure Rate of Chemicals
D = Diffusion Coefficient
A = Area of Contact
SA = Safety Factor

Let’s solve an example;
Find the length when the exposure rate of chemicals is 30, the diffusion coefficient is 10, the area of contact is 3 and the safety factor is 5.

This implies that;

re = Exposure Rate of Chemicals = 30
D = Diffusion Coefficient = 10
A = Area of Contact = 3
SA = Safety Factor = 5

l = DASA / re
l = (10)(3)(5) / 30>
So, l = 150 / 30>
l = 5

Therefore, the length is 5.

How to Calculate Exposure Rate of Chemicals With Nickzom Calculator

Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the exposure rate of chemicals.

To get the answer and workings of the exposure rate of chemicals 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 2,000 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 Materials and Metallurgical under Engineering.

Now, Click on Material Selection under Materials and Metallurgical

Now, Click on Exposure Rate of Chemicals under Material Selection

The screenshot below displays the page or activity to enter your values, to get the answer for the exposure rate of chemicals according to the respective parameter which is the Diffusion Coefficient (D), Area of Contact (A), Safety Factor (SA) and length (l).

How to Calculate and Solve for Exposure Rate of Chemicals | Material Selection

Now, enter the values appropriately and accordingly for the parameters as required by the Diffusion Coefficient (D) is 10, Area of Contact (A) is 14, Safety Factor (SA) is 12 and length (l) is 8.

How to Calculate and Solve for Exposure Rate of Chemicals | Material Selection

Finally, Click on Calculate

How to Calculate and Solve for Exposure Rate of Chemicals | Material Selection

As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the exposure rate of chemicals and presents the formula, workings and steps too.

Leave a Reply