Laboratory Work

Procedure: Obtain 8.5 mL of isoamyl alcohol and 15. 0 mL of acetic acid in a 100-mL round-bottomed flask. Add dropwise 5 mL of concentrated sulfuric acid with boiling chips and reflux for one hour. At the end of the reflux cool the round-bottomed flask in a cold water bath. Pour the contents of the […]

General Information We researched the chemical element known as chlorine. Chlorine has an atomic number of 17 and an atomic weight of 35.453. It has a valence number of 3. The element has 3 energy levels. Chlorine exists as a greenish-yellow gas at normal temperatures and pressures. Chlorine is second in reactivity only to fluorine […]

Introduction Using the direct weighing and weighing by difference methods to find weight and mass of chemicals and compounds. Purpose The purpose of this lab was to become familiar with the three different balances and two different methods used to find the weight and mass of chemicals and compounds in the ChemLab program. The lab […]

Introduction The fundamental components of all living beings are cells. Cells offer structural support, absorb nutrients, and convert energy. They also possess specific functions and genetic material for replication. Furthermore, cells function as metabolic compartments where a variety of chemical reactions occur. There are two categories of cells: eukaryotic and prokaryotic. Both prokaryotic and eukaryotic […]

Introduction An acid-base titration is a method of neutralizing strong acids. Unbeknownst to many, acid-base titrations occur on a daily basis. Our stomachs use acid to help us digest our food – approximately . 155 hydrochloric acid (HCl) with a pH of 2-3. When too much of this acid is formed in the stomach, heartburn […]

The purpose of this week’s lab is to learn to demonstrate a double-replacement reaction of ionic compounds. To accomplish this, two ionic compounds will be mixed together and the product will precipitate out of solution. In this procedure, the product must be precipitated out of the solution and then weighed. For this lab, lead (II) […]

When writing a report based on a scientific experiment you conducted, it is crucial to pay attention to the writing task. Researching is crucial in all fields of study, such as psychology, chemistry, biology, and others. Although writing an efficient lab report may pose difficulties, it becomes simpler with practice and following some tips. It […]

Cheryl Hailstrom, fictional new CEO of toy manufacturer Lakeland Wonders, is having problems getting her staff to buy into her vision for the company. For example, her senior VP of operations, Mark Dawson, doesn’t seem to understand her vision, nor does he show any interest in moving quickly to implement strategies to make Hailstrom’s vision […]

Introduction Newton’s third law of motion states that force occur in pairs. It also states that every action has an equal and opposite reaction. This means that for every force applied on an object, there is an equal force in magnitude which is operating in an opposite direction. During the interaction of two objects which […]

The objective of this lab was to determine the solubility of different solutions through a series of mixing and observation steps. The initial steps consisted of pouring the nitrate solutions into the designated sections of the 96-well plate. After completing this task, the sodium solutions were to be added to the specified sections of the […]

Lab Report: Determination of a chemical formula: the empirical formula of Magnesium Oxide 1. Purpose: Determine the empirical formula of magnesium oxide from the percent composition (this can be found using the Analytical Method and the Synthesis Method) Introduction: In the late eighteenth century, combustion has been extensively studied. According to Steven and Susan Zumdahl, […]

Introduction Introduction In CHM151, we studied the first law of thermodynamics which states that energy can be transferred (as heat or work) between a system and its surroundings, but it cannot be created or destroyed. Calorimetry is a technique used to measure heat effects in the surroundings in order to understand energy transfers to or […]

Assessment The structural features of the pill bug allows it to have advantages over other organisms. The pillbugs multi-segmented body allows it to roll into a ball if it feels threatened or in danger in order to protect its self. Another advantage of have a multi-segmented body is it allows the pillbug to semi curl […]

Jeremy Cotto Purpose We did this lab to further our understanding of Spiny dogfish shark anatomy and make the class more entertaining. People dissect organisms to find reasons for how they are able to do certain things. For example, the shark can chew through a great variation of things, because it has razor sharp teeth. […]

Process Capacity Analysis-Solved Problem Daffy Dave’s Sub Shop makes custom submarine sandwiches to order. They are analyzing the processes at their shop. The general flow of the process is shown below. There is a separate person working at each of the steps in the process. Slice the bun and add the meat/cheese, add the toppings […]

Introduction A red pigment called Betacyanin located in the vacuole of the beet cells is released when the membrane is damaged (Danyk, 2013). The membrane is necessary for sustainability of the cell’s life, it separates the cell from the outside environment, and is responsible for diffusion, exocytosis and endocytosis, and transport. It can be damaged […]

In addition to recrystallizing acetanilide, the experiment involved trying to recover the crystals with the least impurities. The major laboratory technique used in this lab was hot vacuum filtration, which involved pouring the heated test tube of acetanilide and water through a Buchner funnel that’s on top of an Erlenmeyer flask.Following the recrystallization, the recovery […]

Minnetonka has reached out to a subcontractor for the purpose of discussing the purchase of bindings. The subcontractor has proposed two options: either buying each binding at a price of $5.25, or purchasing a pair for $10.50. If the Minnetonka Corporation accepts the purchase proposal, it is expected that the direct labor and variable-overhead costs […]

The increase in water inside the cell causes the cell to become engorged and erupt. In a hypertonic environment, water will leave the cell, as the amount of water in the cell is higher than that outside of the cell. As a cell looses water in a hypertonic environment it becomes smaller in size and […]

BUS Each computer or CPU has some kind of channel that allows devices inside computer to communicate with each other. This channel connects processor and RAM. A computer or CPU needs to be able to send various data values, instructions, and information to all the devices and components inside your computer as well as the […]

Business networking is a socioeconomic activity that focuses on recognizing and creating business opportunities. It is a form of social network specifically designed for business-related activities. Various organizations offer networking models to help individuals build relationships and generate opportunities. In the Philippines, Network Marketing Businesses have gained popularity due to their potential for high earnings […]

Discussion An incandescent light bulb, incandescent lamp, or incandescent light globe is an electric light that produces light with a filament wire heated to a high temperature by an electric current passing through it until it glows. The hot filament is protected from oxidation with a glass bulb that is filled with inert gas. Incandescent […]