At home and at work, chemistry is all around us. The names of chemicals and units used to describe their concentrations are often different when we encounter them in our everyday lives, though. For example, we can buy distilled white vinegar at the supermarket for cooking and cleaning, but the same solution could be found in a chemistry lab labelled as 5% (w/w) acetic acid or 0.833 M acetic acid.
Some other common solutions and their typical concentrations include:
Beer, 4-8% ethanol (v/v)
Rubbing alcohol, 70-99% isopropanol (v/v)
IV Dextrose, 5-10% glucose (w/w)
Cough syrup, 1 mg/mL dextromorphan
Infant Tylenol, 160 mg/5 mL acetaminophen
Seawater, 35 ppt = 35 g/kg NaCl
Miracle Grow Indoor Plant Food, 1% N, 1% P, 1 % K (w/w)
Choose a chemical solution that you use regularly at home or at work and list the name and concentration of the solution from the package label.
Describe where you use the solution, what you use it for, and any additional steps required to prepare it for use.
Use the internet or published MSDS to research and report on the:
(optional, but encouraged) Include a picture of the chemical structure
Using the concentration and the molecular mass, show how to convert the concentration into units of molarity.
A quick note about % solutions: check to see what type of % is being used!
% (w/w), weight-to-weight, or % by weight is calculated as the mass of the solute divided by the mass of the solvent and is common for solids dissolved in a liquid.
% (v/v), volume-to-volume), or % by volume is calculated as the volume of the solute divided by the volume of the solvent and is common for liquids dissolved in a liquid.
% (w/v), weight-to-volume, typically only used in chemistry for reporting solubilities
Also note that water has a density of 1g/mL, so weight and volume for aqueous solutions (solutions where water is the solvent) are interchangeable. Thus, % (w/w) and % (w/v) are the same for an aqueous solution.
Since all our papers are written from scratch, the papers we submit are plagiarism free and we strictly adhere to lecturer’s instructions. Our writers are highly qualified from all over the world and include graduates and professors from most of the largest and known universities in the world. Once you have assigned us your assignment, we select the most qualified and reliable writer to handle your assignment.
Unlike other writing companies, we encourage clients to draw back their money at any stage of the writing process if they experience any uncertainties with the quality of generated content. However, you will hardly have to make this decision because of our business approach that suits your needs.
We have an advanced plagiarism-detection system that flags any work that fails to meet the required academic expectations. Our company thrives in honesty, and as such, you will be guaranteed to achieve a paper that meets your expectations.
At homeworkpaper.org we have online agents that you can chat with to have your assignment taken care of with the little remaining time. Also, we have professional academic writers who will work on your assignment providing you with a high-quality paper at the same time. We can take care of your urgent assignments in less than 5 hours.
We uphold confidentiality and privacy through our interactions with clients, an aspect that has enhanced our relationship with prospective customers seeking for assignment help. We do not disclose your information with third-parties; neither do we share your work with any other person apart from you.
We do not resell previously-done tasks delivered to other clients. When we deliver orders to our clients, we safeguard their privacy and confidentiality by ensuring the third party does not access the work. By writing the papers from scratch, we have managed to maintain a certain level of originality, which defines our business model. Our qualified editors proofread all submitted work to eliminate mistakes that can interfere with the credibility of the assignment.