Georgia Military College Relationship of Calculating Lattice Energy Discussion

Don't use plagiarized sources. Get Your Custom Essay on
Georgia Military College Relationship of Calculating Lattice Energy Discussion
Just from $13/Page
Order Essay

(lab discussion 8.2)

This week’s laboratory will extend your knowledge of chemical bonding through interacting with virtual simulations as in week’s past. Your initial post to the forum should be in response to the following:

Discuss the relationship of calculating lattice energy and the Born-Haber cycle.

Here are some suggestions of topics on which to elaborate upon in your explanations:

  • Provide an explanation of the Born-Haber cycle.
  • Explain the difference between ionization energy and electron affinity.
  • Explain how the enthalpy of formation is related to the Born-Haber cycle.

Your subsequent four posts to your peers and/or your instructor should further the discussion by elaborating on the objectives above. Do not include any results for your laboratory experiments. References must be provided for any content retrieved from credible sources.


A lab-based project is a requirement for the lab portion of Principles of Chemistry I. The results of the project will be written as a report, the format of which will be the same used since the beginning of this course. The experiment will be performed in the eighth week of class, and the report will be due by the end of the term. Please read the description, guidelines, and advice that follow.

Purpose of the Project

Students taking a major’s level freshman science course should be able to analyze and report natural phenomena in a scientific manner. The writing of scientific reports and papers is necessary to advance in the scientific field.

Scientists communicate their discoveries to others via papers published in peer-reviewed journals. While I do not necessarily expect you to publish in Nature or The Journal of Physical Chemistry, nonetheless you should gain experience in the procedure to obtain at least some idea of the skills scientists must demonstrate and responsibilities they shoulder. This project is a tool to assess your ability to perform a much simpler, freshman version of the process. A large portion of your efforts this term have been procuring such styled reports of your findings, so you will rely on this experience for this investigation.

Nature of the Project

You will carry out a laboratory procedure to determine the concentrations of two unknown solutions.

Grading of the Project

The report will be scored using the rubric located in the course titled “Laboratory Report Grading Rubric.”

Format of the Report

The report will follow the same formatting guidelines as previously used in the reports for this course.


  • -All experiments are to be completed individually.
  • -All reports are to be formatting as indicated in the formatting guidelines.
  • -Late submissions will not be accepted.


Reading Assignment:

Vo, Kevin. (2019, September 19). Spectrophotometry. Chemistry LibreTexts.

Using the Spectrophotometer

The experiment will be conducted using the virtual spectrophotometer located in the Week 8 module titled “Spectrophotometer Lab.”


Note: You will record your data in the table following this section. The data table must be including in the ‘Results’ section of your report. All calculations carried out must be provided in report.

  1. Determination of Molar Absorption Coefficient:
  1. Select a blank cuvette and place it in the spectrophotometer. Close the lid.
  2. Click on 0 ABS 100%T button, the instrument now reads 0.00000 A.
  1. Choose the solution of CoCl2 solution with known concentration and measure the absorbance between the wavelengths 350 nm to 700 nm. Record this data in Table 1.
  2. Note the wavelength at the maximum absorbance value in Table 1. You will need to provide this in your report.

Absorbance Data for CoCl2

Wavelength (nm)

Absorbance (A)









  1. Calculate the value of molar absorption coefficient using the equation


ε = molar absorption coefficient
A = maximum absorbance of known concentration solution
c = concentration of solution (given in simulation)
l = cuvette length (given in simulation)

  • B.Determination of Unknown Concentration:
  1. Set the wavelength to the value corresponding to maximum absorbance (recorded above).
  2. Place the cuvette with same solution but at an unknown concentration.
  3. Record the absorbance for this wavelength in your notes.
  4. Refresh your page and repeat the same procedure for a second solution of your choice. You must indicate your selection of solution and the resulting concentration in your report. Provide all associated data and calculations.
  1. Calculate the concentration with the help of the equation,


ε = molar absorption coefficient determine from previous procedure
A = maximum absorbance of current concentration solution (not previous procedure)
l = cuvette length (given in simulation)

Notes on Real Laboratory Practices

  1. Always wear lab coat and gloves when you are in the lab. When you enter the lab, switch on the exhaust fan and make sure that all the chemicals and reagents required for the experiment are available. If they are not available, prepare the reagents using the components for reagent preparation.
  2. Make sure to clean all your working apparatus with chromic acid and distilled water and ensure that all the apparatus are free from water droplets while performing the experiment.
  3. Make sure to calibrate the electronic balance before taking the measurements.
  4. Ensure that the spectrophotometer is working properly.
  5. Ensure that you are handling the cuvette with tissue paper. Never touch it with your bare hand.
  6. Wipe the cuvette with tissue paper before placing the spectrophotometer.
  7. Clean all glassware with soap and distilled water. Once the experiment is completed recap the reagent bottles. Switch off the light and exhaust fan before leaving the lab.
  8. Discard the used gloves in a waste bin.

My Essay Homework
Calculate your paper price
Pages (550 words)
Approximate price: -

Why Work with Us

Top Quality and Well-Researched Papers

We always make sure that writers follow all your instructions precisely. You can choose your academic level: high school, college/university or professional, and we will assign a writer who has a respective degree.

Professional and Experienced Academic Writers

We have a team of professional writers with experience in academic and business writing. Many are native speakers and able to perform any task for which you need help.

Free Unlimited Revisions

If you think we missed something, send your order for a free revision. You have 10 days to submit the order for review after you have received the final document. You can do this yourself after logging into your personal account or by contacting our support.

Prompt Delivery and 100% Money-Back-Guarantee

All papers are always delivered on time. In case we need more time to master your paper, we may contact you regarding the deadline extension. In case you cannot provide us with more time, a 100% refund is guaranteed.

Original & Confidential

We use several writing tools checks to ensure that all documents you receive are free from plagiarism. Our editors carefully review all quotations in the text. We also promise maximum confidentiality in all of our services.

24/7 Customer Support

Our support agents are available 24 hours a day 7 days a week and committed to providing you with the best customer experience. Get in touch whenever you need any assistance.

Try it now!

Calculate the price of your order

Total price:

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Services

No need to work on your paper at night. Sleep tight, we will cover your back. We offer all kinds of writing services.


Essay Writing Service

No matter what kind of academic paper you need and how urgent you need it, you are welcome to choose your academic level and the type of your paper at an affordable price. We take care of all your paper needs and give a 24/7 customer care support system.


Admission Essays & Business Writing Help

An admission essay is an essay or other written statement by a candidate, often a potential student enrolling in a college, university, or graduate school. You can be rest assurred that through our service we will write the best admission essay for you.


Editing Support

Our academic writers and editors make the necessary changes to your paper so that it is polished. We also format your document by correctly quoting the sources and creating reference lists in the formats APA, Harvard, MLA, Chicago / Turabian.


Revision Support

If you think your paper could be improved, you can request a review. In this case, your paper will be checked by the writer or assigned to an editor. You can use this option as many times as you see fit. This is free because we want you to be completely satisfied with the service offered.