Objective: The purpose of this lab is to demonstrate that there is a linear relationship between the number of molecules that can absorb light present in a solution and the amount of light absorbed by a solution. This lab should prove that Beer’s law and the equation A=a x b x c‚ is a linear relationship. Procedure: The only deviations in the lab procedure was that the stock solution was made before arrival to the lab with 0.570 g of KMnO4 in 0.500 L. The diluted solutions and the
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Tori Suchy Physical Science Honors 1st block October 4‚ 2012 Balloon Powered Car Problem: In order to create a race car that can travel a minimum of eight meters powered by a nine inch balloon. We need incorporate Newton ’s Law of Motion including speed‚ velocity‚ and acceleration. Hypothesis: If a car were to be made out of homemade materials‚ then it would be possible for it to travel 8 meters powered by a nine inch balloon. Independent Variable: building the car from homemade materials
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TITLE OF EXPERIMENT 2 : DILUTION 2.1: OBJECTIVES Upon completion of this experiment‚ students should be able to: 1. determine the concentration of coloured solution such as FeCl3 by using dilution and colour differentiating (colorimetric) techniques. 2.2: INTRODUCTION Concentration can be expressed in many different ways such as percentage volume and percentage weight etc. In laboratory‚ normally concentrations were expressed as molarity and normality. Molarity is the
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Hess’s Law and the Molar Enthalpy of Combustion for Magnesium Purpose: The purpose of the lab ultimately is to find the molar enthalpy of magnesium. This is done by finding the enthalpy changes of reactions (2) and (3). The enthalpy changes of reactions (2) and (3) along with the enthalpy change given for reaction (4) can be used to arrive at a value of the molar enthalpy of combustion of magnesium by using Hess’s Law. Hypothesis: By using Hess’s law to calculate the molar enthalpy of combustion
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OLD COINS TURN TO GOLD DESIGN: Problem or Research Question: How does zinc effects the color change in a copper penny? Hypothesis: If copper and zinc comes together‚ then it will form brass‚ which gives gold color to copper penny. Variables: There were no variables at this experiment PROCEDURES: Materials: Zinc (SN) filling‚ 3M NaOH solution‚ Copper penny‚ tongs‚ Hot plate‚ 100 ml beaker‚ 250 ml beaker‚ Bunsen burner‚ Water‚ Spoon. Procedure: First‚ we turned on the hot plate.
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of Chemical Engineering CHME 426 –Chemical Engineering Laboratory III Title Page (Full Report) Title of the Experiment: Reaction through three CSTR in series Submitted by: Group (4) Section: Female 1. Name: Amina Ali ID: 200550284 2. Name: Duaa Tabarak ID: 200553858 3. Name: Mariam Rustom ID: 200552242 Date of experiment: 31st March‚ 2010 Date of submission: 11th April‚ 2010 Grades: Report presentation………………………………………… /15 Abstract and Objective(s)……………………………………/10 Introduction
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bromophenol blue(mg/L) 0 2.0 4.0 6.0 8.0 10.0 Absorbance at 590nm (Amax of bromophenol blue) 0 0.182 0.284 0.437 0.583 0.754 0.494 0.573 Absorbance at 460nm 0 0.030 0.041 0.048 0.050 0.055 0.012 0.016 According to Beer Lambert law‚ Absorbance‚ A= λbc λis the molar absorbtivity coefficient in L mg-1 cm-1 b is the path length(in cm) of the cuvette which the sample is contained c is the concentration of the compound in solution‚ in mol L-1 A = λbc is in the form of y = mx where
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PHYS113 Lab1: Coulomb’s Law ABSTRACT Performing this experimentation will allow one to investigate the relationship quantitative relationship between the electrostatic force and the distance between charged objects. First a simply observation was made of the electrical forces on two pieces of tape taking note of their attraction and repulsion. This same phenomenon was observed in the experimentation of two charged spheres. Furthermore the we used this experimentation to determine the
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Investigation Investigate the amount of heat evolved when magnesium reacts with dilute acids. Planning What I am going to do I am going to find out how much heat is given out when magnesium reacts with a variety of dilute acids. In order to make comparisons between the acids‚ I shall use my results to work out how much heat would be given out if 1 mole of magnesium reacted with an excess of each acid. The acids I shall use are hydrochloric acid‚ sulphuric acid‚ nitric acid and ethanoic acid
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Blake Martinez November 1‚ 2013 Lab Write-up Group: Blake‚ Eric‚ Nadia‚ Fidelia Newton’s Third Law Purpose: The purpose of this lab is to calibrate two force sensors properly. Observe the directional relationship between force pairs. Observe the time variation of force pairs. We need to explain Newton’s third law in simple language. Materials: LabPro Interface Two Vernier force sensors .5kg mass String Rubber band DataMate Program Preliminary: 1. The force of the window
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