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Lab Report Essays

Plant Lab Report

Introduction Acid rain refers to a phenomenon in which “[precipitation] from the atmosphere [contains] higher than normal amounts of nitric and sulfuric acids”. The precipitation that results in acid rain comes from the pollution emitted by human activities, such as factories, electrical power plants and automobiles. Two main pollutants are sulfur dioxide (SO2) and nitrogen …

Physic Lab Report

Qualitative Data When amidosulphuric acid was diluted with distilled water, the beaker feels cold. When the phenolphthalein indicator was dropped into the solution, the solution color does not change and remains clear. When the diluted amidosulphuric acid was titrated with the sodium hydroxide solution, the color of the solution turns to pale pink and it …

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Osmosis Lab Report

Natasha Tenen Lab: Thursday (3-6 pm) OSMOSIS LAB REPORT INTRODUCTION Osmosis is a special type of diffusion where water molecules move down a concentration gradient across a cell membrane. The solute (dissolved substance) concentration affects the rate of osmosis causing it either to speed the process up or slow it down. Based on this, how …

Lab report for Experiment Purpose: What is the purpose of this lab?

Title: Experiment #2: Extraction Purpose: What is the purpose of this lab? In your OWN words! Observations: Weighed out 3.2568 grams of chemical mixture that was yellow in color. Dissolved dry chemicals in 38 ml CH2Cl2 with gentle heating. Poured the yellow solution into sep funnel. Added 10 ml CH2Cl2 to flask to rinse, poured …

Investigating Osmosis in Red Blood Cells – Lab Report

Lab Report Microscopic Study: Investigating Osmosis in Red Blood Cells Lab Report Investigating Osmosis in Red Blood Cells Introduction: The flow of water across a permeable membrane is called osmosis, and during this process, water moves down its concentration gradient. A solution surrounding a cell is hypertonic if it contains more solute particles than the …

Molar Mass of a Gas Lab Report

————————- ————————————————- ————————————————- Abstract: ————————————————- ————————————————- The aim of this lab was to determine the volume of one mole of hydrogen gas at STP (standard temperature and pressure). In the experiment, a magnesium ribbon was placed at the bottom of an eudiometer tube and allowed to react with 2M hydrochloric acid. The volume of hydrochloric …

Sieve Analysis Test Lab Report

Aggregate is one of the basic constituents of concrete. Its quality is of considerable importance because about three-quarter of the volume of concrete is occupied by aggregates. One of the physical properties of aggregate that influence the property of concrete is the grading of aggregate. The grading of aggregate defines the proportions of particles of …

Enzyme Lab Report Essay

The oxygen can be observed as bubbles comic Eng from the reaction site. Catalane is found in many living tissues of organisms, including chicken liver. T he purpose of this experiment is to determine what changes in pH, temperature, and enzyme co concentration have on the rate catalane works to break down hydrogen peroxide. If …

Rot Race lab Report

Purpose: To see how fast organisms and materials decay under certain conditions. Procedure: We gathered 4 2-liter plastic pop bottles and cut them to assemble the drawing below. Near the bottom we placed a siv to let juices drain through into the bottom 2-liter. Then we stacked materials and organisms on top of each other …

Lab Report 3 Steam Distillation and 4 Crystallization

Objective In steam distillation lab (lab 3), we must obtain pure Eugenol from cloves through the process of steam distillation. In the crystallization lab (lab 4) part 1, we must acquire the best possible pure crystallization of acetylsalicylic acid from aspirin and in part 2 we must obtain a similar pure crystallization of benzil from …

Lab report: antioxidants

Introduction             Antioxidants are free radical scavengers and are a diverse group of chemicals that can be naturally found in vegetables, fruits and plants in general. Antioxidants are also synthesized in our body. The main characteristic of an antioxidant is its ability to trap free radicals. Highly reactive free radicals and oxygen species are present …

Fluid Mechanics 3-Aerofoil Lab Report

Fluid Mechanics 3-Aerofoil Lab Report Introduction This report aims to investigate the effect the angle of attack of an aerofoil has on the air flow around it. This was done by recording the lift and drag forces the aerofoil experienced when positioned at different angles of attack. The experimental lift force the aerofoil experienced when …

Lycopene Lab Report

Introduction: Lycopene is a carotene because of its carbon and hydrogen composition. It is red in color and a member of the carotenoid family. Members of the carotenoid family play integral roles in plants. They use the absorption of light to aid in photosynthesis, and protect chlorophyll from damage. In humans, Lycopene acts as an …

Restriction Enzyme Lab Report

I. Title. Restriction Enzyme Mapping of pBR322 Using Agarose Gel Electrophoresis. II. Authors. Author: Partner: Section: Thursday, 1:10 pm Date of Experiment: October 25, 2012 III. Introduction. Restriction enzymes (or restriction endonucleases), originally isolated from Haemophilus influenzae in 1970, are enzymes within a cell that cleave foreign DNA within a specific and predictable nucleotide sequence …

Antibiotic Lab Report

Antibiotic Lab Report By: Sierra Toll Hour: 6 Title: The effects of antibiotics on the growth of Escherichia Coli Problem: How do antibiotics affect the growth of E coli? Hypothesis: If Penicillin is applied to the bacteria, then the zone of inhibition will be larger. Background: The purpose of this lab was to see how …

Powder Metallurgy Lab

Introduction The purpose of this lab is to create two material samples through the process of powder metallurgy. After these samples have been manufactured completely through this process then they are evaluated under a microscope. One sample was sintered, and the other one was in its original compacted state for a comparison of how sintering …

Chromatography Lab Report

Using Chromatography to separate Kool-Aid solutions and visible spectroscopy to measure light passing through Date of Experiment: September 18, 2013 Abstract: Homogenous mixtures can come in the form of colored solutions, like the one used in our experiment, which was Kool-Aid. The fact that it’s a homogenous mixture means that it is thoroughly mixed. Chromatography …

Lab report toothpickase

A increase in the enzyme’s strength (Trail 3) -To break two toothpicks at a time. Dependent Variables The number of toothpicks broken. The reaction Procedure 1. Gather 50 toothpicks. 2. Place them in a pile on the table. -To tape the index 3. Choose one member of your group of 4 to break the toothpicks. …

Test Tube Mystery Lab Report

The students were handed 10 test tubes with no identification. The students were supposed to design a method in determining what chemical was in each test tube. The list of chemicals is CuSO4, NH4Cl, NaOH, AgNO3, KI, H2SO4, NaBr, CaCl2, HCl, and Pb(NO3)2. The students are expected to determine the chemicals using physical properties, litmus …

Lab Report- Neurophysiology of Nerve Impulses

Implementation of e-Learning in Ghanaian Tertiary Institutions (A Case Study of KNUST) John Serbe Marfo University Information Technology Services Kwame Nkrumah University of Science and Technology (KNUST) Kumasi, Ghana [email protected] edu. gh Robert Kabutey Okine University Information Technology Services Kwame Nkrumah University of Science and Technology (KNUST) Kumasi, Ghana [email protected] edu. gh Abstract This study …

Addition of Vectors Lab Report

The purpose of this experiment is to show that the magnitude and direction of the resultant of several forces acting on a particle may be determined by drawing the proper vector diagram and that the particle is in equilibrium when the resultant force is zero. Principles RABx = Ax + Bx RABy = Ay + …

Conservation of Momentum Lab Report

Objectives We will study the relationship of force and the duration of the collision. In doing so we will observe the max force experienced by an accelerating cart when it impacts another cart with a spring. A stiff spring will be used. We will collect the information through two items. We will use distance and …

Oxidation Lab Report

Introduction The purpose of the experiment was to oxidize and identify an unknown alcohol using hypochlorite, or household bleach. During the experiment, the bleach oxidized the secondary unknown alcohol into a liquid ketone which was distilled or boiled to find the boiling point and then identified using a chart of unknown identities and boiling points. …

Unknow Lab Report

Introduction The purpose of this lab was to identify unknown bacteria cultures using various differential tests, and my unknown bacteria is #17. The identification of these unknown cultures was accomplished by separating and differentiating possible bacteria based on specific biochemical characteristics. Whether the tests performed identified specific enzymatic reactions or metabolic pathways, each was used …

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