Chemistry lab report Essay

Apurva Puli 2/6/17 Lab Report Honors Physics Calorimetry Lab Purpose: To calculate the specific heat of a substance through the use of a calorimeter To use equations to determine the heat of reaction To calculate the heat of neutralization Procedure: Part A: Obtain all materials Fill a large beaker with water, enough to fill about ⅔ of the beaker Make sure to set up the bunsen burner and stand appropriately Ensure that the materials are balanced Place a thermometer in the beaker of water Obtain

Purpose This lab report identifies gas produced by chemical reactions and tests for oxygen, hydrogen or carbon dioxide. Hypothesis If magnesium and hydrochloric acid (HCl) are mixed together, then the gas created will be hydrogen, because the reactants do not contain any carbon or oxygen atoms. The chlorine will react with the magnesium, and hydrogen will be released. If hydrogen peroxide (H2O2) and yeast are mixed together then the gas created will be oxygen, because hydrogen peroxide does

Final Lab Report 2 Sean Griffin CHM 2045L Imalka I. Introduction Background:     Quality control is an important aspect of science and impacts life for average Americans daily. Just about every manufacturing facility used quality control, including medicine, food, and cosmetics. Quality control is used to determine if a product, like food contain what they say they do. For example, a company claiming to make healthy food may understate the amount of high fructose corn syrup (sugar), but

Materials Glassware/Instrumentation: • 50-mL beaker • 2 600-mL beakers • 9 Capillary tubes • 2 pieces of chromatographic paper approximately 11 x 14-cm • 3 pieces of circle filter paper • Pencil • Fume hood • Square piece of Parafilm • Timer • Metric Ruler Chemicals/Reagents • 10-mL of 6M HCl • 35 mL of Acetone • Co(II) dissolved in 0.1M Nitric Acid • Nickel (II) dissolved in 0.1 M Nitric Acid • Iron (III) dissolved in 0.1 M Nitric Acid • Cu(II) dissolved in 0.1 M Nitric Acid • 0.1 M • 1% DMG

Title: Is there a correlation between the mass it takes to submerge 1cm^3 of a material and its density? Results Table Material Volume of material (cm^3) Average mass to submerge (g) Mass to submerge per cm^3 (g) Density (kgm^3) Polyethylene 317.25 400.00 1.26 0.09 Cubic Polystyrene 42.88 51.67 1.20 0.03 Spherical Polystyrene 33.50 58.33 1.74 0.06 Aerated Foam 252.00 283.33 1.12 0.05 Dense Foam 3.88 5.00 1.28 0.49 Graph Description of Results In the weight to submerge, by far the most buoyant

During this lab, the main focus was on making accurate and precise metric, and pH measurements. The pH of a solution is a measure of the molar concentration of hydrogen ions in the solution and as such is a measure of the acidity or basicity of the solution. A buffer is a solution that can resist pH change when adding acidic or basic components. The main function of buffer is to neutralize small amounts of added acid or base, which maintains the pH of the solution relatively stable. It has the ability

PHOTON ENERGY: E= Hc/λ E = (6.626 × 10 -34 joule•s) x (3 x 10^8) / (200 x 10^-9 m) E = 6.22eV 12.6eV is required to ionize water. This proton has an energy of 6.22eV and because this is less than 12.6eV, the energy required will not be sufficient to ionize water molecules. PHOTON ATTENUATION: 1) HVL = 0.693 / (attenuation coefficient in m) HVL = 0.693 / (60.5/100) m = 1.145 m (at 100kev) 2) HVL for the 94% beam: 2.813 / (60.5/100) m = 4.65… 4.65.. m/ 1.145 m = 4.06..  4 HVL are

CHEM 2123 and 2125 – Organic Chemistry Lab I and II GUIDELINES FOR WRITING LAB REPORTS INTRODUCTION Writing reports in organic chemistry lab may differ from the way it’s done in general chemistry. One goal of this course is to introduce you to the record keeping methods used in research labs. Such methods are designed to organize experimental data in a format similar to that required for publication in major scientific journals. Here are some important considerations that apply in research settings

9-19-13 Dehydrating and Rehydrating a Hydrate Introduction The mass percent of water was determined using the mass of water and dividing it by the total mass of the hydrate and then multiplying that answer by 100%. The number of moles of water in a hydrate was determined by taking the mass of the water released and dividing it by the molar mass of water. The number of moles of water and the number of moles of the hydrate was used to calculate the ratio of moles of water to moles of the sample

The Chemistry of Natural Waters Lab Report Richard Reube November 6, 2014 Chemistry 111 Section: 103 Group Members: Alan Reyderman Leslie Rowland TA: Steven Taylor Introduction: Water plays a vital role in nearly all key processes of human life. From merely sustaining it in less developed countries, all the way up to being the cornerstone of many technological and industrial processes in modern America. The average consumption ranges from 5.4 liters in Madagascar to over 500 hundred liters in America1