Environmental chemistry

Imagine walking down a long row of cages. In every cage there is a terrified animal. The animals range from birds, rodents, and fish to dogs and cats. Although each animal is different, they all have one thing in common: they are lab subjects. Every animal is petrified while cowering in the corner of their cage. The animals also writhe in pain because of the drugs that are coursing through their bloodstream. The animals have never experienced what it is like to be loved and cared for. They only…

The Power of Knowledge Have advancements in knowledge changed the way people think about science experiments and the things scientist are creating? The people rely on these advancements and do not notice the effects they are having on them and their lifestyle. The advancements in science caused the people of the world to be lazy, cause harm to animals, and causing outrageous inventions to be invented. New technology has caused the people of the world to be lazy. The people in the United…

My earliest memory of science is from 5th grade in Mr. Kern’s class. I remember we had a unit on sea creatures, and we got to take care of and study fish and crawfish. I loved this activity because it was so hands on and we were the caretakers of the creatures, so we did all the work. It was really our own experiment, not just something out of a book. We all loved coming into class in the morning and running to see our new pets, and one day I noticed my crawfish had lost its shell. We learned…

All the materials were purchased from Sigma-Aldrich and used as received unless otherwise stated. Reaction (1) How to make Sodium Azo-Tetrazolate--Pentahydrate (SAT) Approximately 2.15 g of Aminotetrazolate monohydrate was added to approximately 62.5 ml of 2 M sodium hydroxide. While being stirred, the solution was heated, increasing its temperature up 10 degrees Celsius, up to 60 degrees Celsius. Over a one hour time period, potassium…

dosage, acids and bases, matter, chemical and physical properties, and etc. Pharmaceuticals are made of elements that are apart of the periodic table. That happens when combining two or more elements together causing a chemicals reaction. Also in chemistry is a law called the Law of Conservation of Matter which is used to determine chemical composition in compounds and chemical reactions. To determine this you would need to use a process called stoichiometry. (SC1) Pharmaceuticals is the…

Chemistry relates to everything you could possibly think of on the planet. They relate to every object and every natural event and hazard. Such as sinkholes, there a very intimidating and scary event that could happen at any moment . Sinkholes occur when the limestone beneath us breaks away by acidic rain and eventually the ground gives creating an open hole in our earth`s surface. Chemistry can relate to chemical reactions, one of the chemical reactions that occur is the creation of acidic rain…

I want to be a part of the NSF-REU program because I know I would make a great contribution. In an informal research project for my biology lab course, I led a team of four in a time-crunched, self-created lab. I took up the role of leadership, assigned tasks, organized meetings and worked outside of class hours to complete the testing. Taking charge wasn’t always easy for me but, at the College of Saint Benedict, there is a NSF S-STEM scholarship program called FoCuS. The program provides…

solution as molecules instead of ions. Colligative properties are properties of a solution that depend on the amount of solute dissolved, and not dependent on the identity of the solute. The colligative properties studied in this current chapter of chemistry are: vapor pressure lowering, boiling point elevation, freezing point depression, and osmotic pressure. The van’t Hoff factor for a solute is equivalent to the number of particles, in moles, will break apart in the solvent. When an…

Whether we notice it or not, chemistry lives in our bodies. Things such as skin conditions, digestion, breathing, and hair growth all deal with chemistry in their own way. They all have certain chemical reactions and chemical changes that affect the way our bodies work. Even though we study different curriculums during chemistry such as the chemical equations, chemical reactions, and other things we have learned go far beyond what is said in class. During food digestion there are…

Where M.R is the moisture loss ratio, M_0 is the initial moisture content, M_t is the moisture content at time t, M_e is the equilibrium moisture content, t is time (minutes), and a, b, c, and k are constants. For the effectiveness of diffusivity, Fick’s equation was used (5) to estimate the dehydration kinetic of different osmotic conditions. M.R=((M_t-M_e)/(M_0-M_e ))=〖8/π^2 e〗^((-(π^2 Dt)/(4L^2 )) ) …(5) Where D is the effective diffusivity, and L is the length of the (cubical) sample.…