during the lab session Procedure Part A This lab was performed by the group members as they closed both low and high flow rotameters (Fig-2) and filled the tank with water. Then‚ the large rotameter was opened when the water in the tank had reached the internal baffle‚ so the flow from the tank was reduced by doing so. One member was in charge of adjusting the level of the water so it was always maintained over the baffle’s level during the lab (Fig-1). The first part of the lab was done
Premium
Lab Report Marisa McKinney P. 2 Purpose: To investigate the periodic variation of density in Group 4A elements. Background: When the elements are arranged in order of increasing atomic number‚ they exhibit periodic recurrence of properties. Elements in the same group in the periodic table tend to have similar physical and chemical properties. These similarities are due‚ in large part‚ to similarities among the electron configurations of the elements in a group. You can find periodic
Free Periodic table Chemical element Germanium
ABSTRACT A molecular diffusion experiment was conducted with the goal of determining the diffusion coefficient of acetone into air. For this experiment‚ acetone was placed in a capillary tube and was allowed to diffuse into non-diffusing air that was passed over the test tube at the temperature of 50oC.Thetemperature is kept constant and air stream is passed over the top of the tube to ensure that the partial pressure of the vapor is transferred from the surface of the liquid to be air stream bymolecular
Premium Diffusion Molecular diffusion Liquid
Diffusion and Osmosis Through Dialysis tubing We did this experiment to test the diffusion of different substances through dialysis tubing. We used what we knew about diffusion to make predictions on what we thought the mass of the dialysis tubing to be after submerging them for 30 mins and we knew that diffuse occurs from highest concentration to lowest concentration. Since the dialysis tubings are filled with different substances than what they are being put into then they should all gain
Premium Concentration Osmosis
"18. Dehydration of 2- Methylcyclohexanol." Organic Chemistry Lab 2040L. XU Chemistry‚ n.d. Web. 12 Feb. 2013. 2. "Material Safety Data Sheet 2-Methylcyclohexanol." Http://www.coleparmer.com/Assets/Msds/97403.htm. Coleparmer‚ 19 Mar. 1998. Web. 12 Feb. 2013. 3. "Material Safety Data Sheet Methylcyclohexane." Sciencelab.com. Science Lab‚ 09 Oct. 2005. Web. 12 Feb. 2013. 4. Helmenstine‚ Anne M.‚ Ph.D. "How to Write a Lab Report." About.com Chemistry. About.com Guide‚ n.d. Web. 23 Feb. 2013
Premium Chemistry Water Laboratory
Crystallization: Lab Report Theory/Introduction The purpose of this lab is to understand the concept of purification through crystallization. Crystallization is the process of purifying a substance‚ with the most adequate solvent. The process of crystallization came to be based on the principle of solubility. First‚ we must choose a solvent. The solvent is crucial to crystallization because it’s what will allow impurities to dissolve. Therefore‚ when selecting a solvent it is important that it
Premium Solubility Chemistry Solution
CO2 Lab Report Intro Alka-Seltzer tablets are used to treat cold/flu symptoms as it produces CO2 when dissolved in water. The goal of this lab is to calculate the amount of NaHCO3 is needed to produce enough CO2 gas to fill the room. Experimental One Alka-Seltzer tablet was weighed on the analytical balance. Then a piece was measured out to be between 0.21 and 0.28 grams. 500mL of distilled water was added to a 600mL beaker. 80mL of water was mixed with 20mL of 6M HCl in a 150mL beaker. A
Premium Tablet Laboratory glassware
BIOLOGY LAB REPORT (UNIT 7: ENZYMES) GENERAL Enzymes are protein that acts as catalyst‚ lowering the activation energy need for reactions to progress in cells. The reaction can still occur without the presence of the enzyme‚ but at a much slower rate. The activation energy is the minimum amount of energy need for a chemical reaction to occur‚ yielding from a given set of reactants. In enzymatic reactions‚ we have substrates which are reactants of reaction bound to an enzyme. While an active site
Premium Enzyme Catalysis
STRUCTURE AND FUNCTION OF LIVING CELLS Name Answer the following questions as you work your way through the lab material typing in your answers. Then submit your completed lab report through the “Assignment” feature. This lab report is worth 50 points towards your final lab grade. Also‚ per the Honor Code‚ this work must be your own. CELLS Using your Biology Textbook answer the following questions. 1. What types of organisms are Prokaryotes? The Prokaryotes are organisms that are
Premium Brain Nervous system Neuron
Formal Lab Report #1 I. Basics Title of the Experiment: The Empirical Formula of an Oxide Authors: Section Number: Chemistry Location and Date II. Abstract The aim in this lab was to determine the empirical formula of an oxide of magnesium through combustion in air. This was achieved by heating an established mass of magnesium in air inside of a crucible‚ ultimately attaining a compound that contained Mg and O. The major result of the experiment was the empirical formula of the oxide of magnesium
Free Oxide Oxygen Chemistry