Preparation of Standard Solutions and Use of a Spectrophotometer to Measure the Concentration of an Unknown Solution Introduction Concentration is the ratio of the quantity of solute to the quantity of the solvent or the quantity of solution. By knowing this‚ CO(NO3)2 *6H2O Purpose What is the percent transmittance of six different solutions of cobalt (II) nitrate hexahydrate using a spectrophotometer? Materials * Graduated cylinder (10 mL) * Graduated cylinder (25 mL) * pipet
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Aims To investigate the effect of varying the concentration of H2O2 has on the reaction‚ and to determine the respective order of reaction. To investigate the effect of varying the concentration of KI has on the reaction‚ and to determine the respective order of reaction. To investigate the effect of varying the temperature has on the reaction‚ and to determine the respective order of reaction. To investigate the effect of introducing Ammonium Molybdate to the reaction Arrhenius stuff
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Determining the concentration of red dye #40 in an unknown solution Introduction: White light is composed of many different wavelengths of light combined together. A spectrophotometer is an instrument that shines a single wavelength of light of a known intensity into a solution and then measures the intensity of the light exiting the solution. If a solution contains
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Separating the components of the Panacetin using Extraction and Evaporation Objectives: The purpose of this experiment was to perform the separation of aspirin‚ sucrose and an unknown analgesic‚ which are constituents of Panacetin using the methods of filtration‚ extraction‚ and purification Structures: Sucrose Unknown Aspirin Table of Reagents and Solvents: Substance MW Wt. or Vol. Moles MP or BP‚ ºC Density g/mL Hazards Panacetin na 2.014 g na na na Harmful if swallowed
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Synthesis of Butyl Benzoate Using Phase Transfer Catalysis The objective of the experiment is to synthesize the butly benzoate by nucleophilic substitution and characterize it by IR spectroscopy. The percent yield of the final product is determined after the synthesis. Procedures: 2.0 mL of 1-bromobutane‚ 3.0 g of sodium benzoate‚ 5.0 mL of water‚ 4 drops of Aliquat 336‚ and a boiling stone were placed in a 50mL round-bottomed flask. The reaction mixture was refluxed for 1 hour and the flask
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- 3 Petri dishes prepared with agar - 1 disinfected swab - 1 bottle of disinfected water - A piece of filter paper - A hole puncher - 4 test tubes - 1 measuring cylinder - 1 pipette with disposable tips - Tetracycline - Clindamycin - Benzoyl peroxide - 1 beaker of water - P. acne bacteria culture - 1 forcep - 1 digital weighing scale - 1 marker pen 1. Before starting the experiment‚ make sure you clean your work area with Chlorox and wear gloves at all
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SCIENCE ZONE (Run by Advaith Innovative Science Association ® [AISA]) Reg. No. DRB-S/SOR/344/2011-12 Affiliated to VIPNET –Reg. No. V1502010 (A Network of Indian Science Clubs of Vigyan Prasar Govt. Of India) #112‚ Someshwara colony‚ 30th main BTM 2nd stage‚ Bangalore -560068 email: sciencezone.aisa@gmail.com By:- Varundas J H Experiments conducted by Science zone Experiment no.1 Study of Bunsen burner and glass work A) Study of Bunsen burner The different parts of Bunsen burner
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Michelle Olson Lab report 4/25/14 Percent of Cu in a post 1982 cent PURPOSE: What is the experimental % of copper (Cu) in a post 1982 cent? In this lab‚ we will determine the % composition of a modern (post-1982) penny by using a strong acid called nitric acid (HNO3)‚ to react and dissolve the zinc core‚ leaving only the copper coating. Once only copper remains‚ we will then compare its’ absorbency to the other five post-1982 penny Cu concentrations made in this lab. INTRODUCTION:
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Objective: To determine relative molecular mass of a soluble base‚ X2 CO3 by carrying out an acid-base titration with the following reaction ‚ knowing the amount of hydrochloric acid used and the amount of substance Z used. Hypothesis: The X in substance Z is a group 1 element because substance Z is a soluble metal carbonate and would most likely be sodium or potassium because these elements are commonly used. Materials 100 cm3 beaker‚ 250 cm3 beaker‚ 250 cm3 volumetric flask with stopper
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Introduction Objectives Validate the Beer-Lambert law for KMnO4. To determine the pKa for an acid-base indicator To estimate the equilibrium constant for the formation of complex ion Fe(NSC)²ꭞ The function of part two of the experiment is to find the value of the constant K‚ in the following equilibrium constant: K=[Fe (NSC) ²⁺]/ [Feᶟ⁺] [NCS⁻]‚ while not disrupting the equilibrium. Theory For part one. The majority of chemical compounds are known to absorb UV or visible light. Depending
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