The Unknown

made in the first week of lab. An acid of unknown concentration was prepared by the instructor and given for analysis. 25.00 mL of the acid was transferred into an Erlenmeyer flask using a volumetric pipette and 2-3 drops of phenolphthalein were added. The resulting solution was titrated with NaOH to achieve the faint pink endpoint and [unknown] was calculated according to the volume of NaOH used. The purpose of this experiment was to determine the [unknown acid] by titrating it with a…

In the nine unknown solutions experiment there was nine solutions that were labeled with just numbers from one to nine and all of these one to nine solutions were mixed together randomly to see what kind of reaction it would form. There were mostly no reactions being formed but the reactions that were soluble and insoluble formed different colors of precipitate. The main importance in finding the nine unknown solutions was to prevent any inaccuracies that might form when there is a chemical…

The Unknown Religion The sun was out, the air was warm, it was the perfect Sunday and my family and I were getting ready to leave for the Gurdwara, also known as the Sikh temple. Ever since my brother and I were children, our parents instilled a weekly routine of attending our local temple every Sunday afternoon. Although some children might say it was boring to sit for ninety minutes listening to hymns, and sermons, I enjoyed going to the Gurdwara. After the sermons, we ate langar, which was…

that deduced the identity of the unknown microorganism. A gram stain was performed on the bacterium and a purple color was seen under the microscope. The purple hue that was acquired by the unknown microorganism indicated that the organism had a thick peptidoglycan layer meaning that the bacterium was gram positive. Looking under the microscope helped to identify the cellular arrangement of the bacterium which was sphere shaped, in clusters and thus narrowing the unknown microorganism to the…

children can have a better tomorrow.” People make sacrifices in the present so that future generations can have a better shot at life. What humanity’s actions will affect the people of tomorrow? The immigrants in Cristiana Henequez’s novel The Book of Unknown Americans face this viewpoint. The novel mainly follows two families: the Rivera family, who recently immigrated to the United States from México to receive medical help for their daughter, and the Toro family, who immigrated to America…

general chemical knowledge to identify 10 different unknown solutions. There are two main techniques that were used which are, measuring their pH, and, reacting all of the solutions together. Identifying an unknown solution is an essential skill for anyone who is going to work in a lab because many times, the label might not be accurate, or damaged. Procedure: Safety Precautions: Eye protection - Avoid skin contact. Procedure: Ten unknown solutions were obtained in addition to a spot…

a better place. Being an American in the 21st century means fighting for your passions, no matter what the consequence or how valuable the sacrifice. Immigrants can experience enormous troubles while trying to travel to America. In the novel The Unknown Americans by Cristina Henríquez, readers witness the struggles of two immigrant families. Through all the troublesome work and tough times they experience,…

Identifying an Unknown Plasmid Through the Process of Gel Electrophoresis Introduction: Biotechnology requires certain techniques and methods that help identify plasmids, which can be used for forensics, DNA fingerprinting, etc. In this class, each lab focused on teaching the process of using the correct techniques used to identify a plasmid. Plasmids are pieces of DNA that are circular and relatively smaller than chromosomes. They aren’t important in the sense that they don’t carry out…

Unknown Scheme: You can use this scheme as a guide when you are making your own. Don't just show up to class with this though. **SCHEME FOR UKNOWN 2:** Unknown Scheme: 2 I. Description A) Phase, solubility, color, odor, shape II. Flame Test A) Orange flame  Na+ present (possibly K+, NH4+) B) Red flame  Ca2+ present (no Na+) C) Purple flame  K+ present (possibly NH4+) D) No change in flame color  Ca2+, K+, Na+ absent (possibly NH4 present) III. pH Test A) Add a little…

being told? Why does the author need to tell this story?) The Book of Unknown Americans takes place in a small town in Delaware. The Rivera family traveled there from a town called Pátzcuaro, which is located in Michoacán, Mexico. This story takes place over a year in the 21st century, the exact year is 2014. The Rivera 's have to deal with leaving a poor town they 've grown up in with little technology to moving to an unknown place where they are "gringos." They have to deal with the modern…