During the lab experiment six different test were conducted. Each test consists of chemicals to be tested using 3 to 10 drops of the additive in order to observe a change. With any experiment you compose a hypothesis; where you make an educated guess. The hypothesis will primarily be‚ which base chemical will produce the greatest change based on the additive. Experiment 6.1 (Starch) when adding the three drops of Iodine to each tube observe the color change. When performing this test the chemical
Premium Chemistry Hydrochloric acid Chemical reaction
different conditions on membrane permeability. 4.2 Learning Objectives In this Lab Session‚ students will acquire the skills to: - analyze the effect of different temperatures on membrane integrity. - analyze the effect of the organic solvent acetone on membrane integrity. 4.3 Introduction Even though membranes separate cells from their surrounding environment and different organelles within the cells from the cytoplasm‚ there is a constant flow of selected molecules through them allowing
Premium Lipid bilayer Cell membrane Cell
NOTES AND COMMENT 343 DETERMINATION OF CHLOROPHYLL AND PHEO-PIGMENTS : SPECTROPHOTOMETRIC EQUATIONS~ It has been shown that chlorophyll degradation products may at times constitute a significant fraction of the total green pigments present in seawater (Yentsch and Menzel 1963; Lorenzen 1965; Yentsch 1965). These degraded forms‚ or inactive chlorophyll‚ absorb light in the red part of the spectrum; if they are present in concentrations significant relative to chlorophyll a‚ a serious error
Premium Chlorophyll Spectroscopy Chromatography
Title : The Beer-Lambert Law and Its Limitation Objective : 1. To determine the linear relationship between absorbance and concentration of an absorbing species. 2. To study the effects of molecular dissociation complex formation on the applicability of the Beer-Lambert Law. 3. To investigate the derivation and limitation of Beer-Lambert Law. Introduction: In optics‚ the Beer–Lambert law‚ also known as Beer ’s law‚ the Lambert–Beer law‚ or the Beer–Lambert–Bouguer law relates the absorption
Premium Spectroscopy Concentration Electromagnetic radiation
It is necessary to recrystallize it in order to obtain pure Zn(C5H7O2)2.H2O. To do this‚ prepare a solution of acetone and distilled water that contains 35 mL of acetone plus 15 mL of water and add 1 mL of acetylacetone to it. The acetylacetone serves to prevent decomposition of the product. Finally‚ add the precipitate to the solution and stir thoroughly. What is the appearance of the
Premium Oxygen Water Chemistry
Experiment 1: Simple Distillation and Boiling Points- Separation of Liquids February 24‚ 2014 Analysis In this experiment‚ the distillation of three groups of two miscible liquids was performed. First‚ Ethanol and 2-Propanol were distilled. The boiling points of ethanol and 2-propanol had a difference of 5°C. The percent recovery for both ethanol and 2-propanol were both 0%. The percent recovery of the intermediate was 96%. The percent efficiency calculated of ethanol and 2-propanol was 0% efficient
Premium Distillation Evaporation Water
maximum water content of 1.5%. • High purity grade offers a minimum assay of 99.5%‚ a maximum methanol content of 0.10%‚ and a maximum water content of 0.05%. In many applications‚ Eastman methyl acetate can be an effective replacement for acetone and other fast-evaporating solvents. Strength—assay Methanol Water Acidity as acetic acid Color‚ PCS Some common cleaning applications include: • Universal cleaner • Low-VOC and environmental cleaners • Aerosol carburetor cleaners
Free Solvent Acetic acid Ethanol
Indigo Synthesis Author: Carolina Morales Group #1 Lab Partners: Jennifer Capeloto‚ Samantha Hoffman and Adriana Garibay Instructor: Saehan Park Chem. 152‚ Section 43 Date Work Performed: February 10‚ 2010 Date Work Submitted: February 24‚ 2010 Abstract: The percent yield of the color Indigo that is the color of blue jeans for the three trials was determined to be 13.50%‚ 15.30% and 14.80%. A series of experiments were performed to a cloth dye comparison. The absorbance
Premium
technique used was Doebner reaction and the other technique used was Claisen-Schmidt reaction. Therefore the aim of this experiment is to synthesize trans p-methoxycinnamic acid and to synthesize dibenzalacetone via an aldol condensation reaction between acetone and benzaldehyde. The products would be recrystallized using ethanol‚ then characterized using melting point analysis. Introduction: In this experiment we learnt on carbonyl compounds‚ enols and enolates. We also learnt two different techniques
Premium Carbonyl Organic chemistry Aldol condensation
International Journal of Advances in Engineering & Technology‚ July 2011. ©IJAET ISSN: 2231-1963 EFFECT OF PROCESS PARAMETERS ON MECHANICAL PROPERTIES OF THE INVESTMENT CASTINGS PRODUCED BY USING EXPANDABLE POLYSTYRENE PATTERN Nikhil Yadav1 and D. B. Karunakar2 1 2 M.Tech Scholar‚ Mechanical & Industrial Engg. Deptt.‚ IIT Roorkee‚ Roorkee‚ India Assistant Professor‚ Mechanical & Industrial Engg. Deptt.‚ IIT Roorkee‚ Roorkee‚ India ABSTRACT The present study is concerned with the investigation
Premium Tensile strength Materials science Aluminium