protein concentration of an unknown sample of BSA‚ and by using the standard curve. Abstract A spectrophotometer’s purpose is to use colors of the light spectrum to determine the concentration of light absorbing molecules in a solution. (p.59) In this particular lab‚ our mission was to determine the protein concentration and the standard curve of the unknown sample of BSA. This‚ by preparing five dilutions of the unknown solution of BSA together with other known concentrations‚ and then
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Analyzing the effects of varying hydrogen peroxide (H2O2) concentrations on the volume of its drop Jonah Jemina IB Chemistry SL 11 Mr. Eastwood Analyzing the effects of varying hydrogen peroxide (H2O2) concentrations on the volume of its drop Jonah Jemina Introduction: Hydrogen peroxide is a clear and colourless substance that has a strong oxidizing characteristic. From the books‚ “Hydrogen Peroxide: Medical Miracle”[1995] by Douglass and “Applications of hydrogen
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with various sucrose concentrations and were placed into beakers of different sucrose solutions. Overall the results showed that the higher percentage of concentration gradient of sucrose‚ the more the artificial cells absorbed. Introduction: The phenomenon being investigated in the lab was how the concentration gradient affects the rate of osmosis in a cell. Osmosis is the passive movement of water from and area of high concentration‚ temperature‚ and pressure. The concentration gradient is the difference
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Abstract: The main objective of this Lab‚ is to experiment with stoichiometric measurements‚ since it is one of the most important subjects in chemistry. In addition‚ stoichiometric measurement is widely used in chemistry‚ because it indicates the proportion of mass in which various substances react. By examining one specific example of stoichiometric determination‚ which is: “Stoichiometry and limiting reacting”‚ we found out the different mass proportions in which substance react. In this case
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| Determination of the Critical Micelle Concentration | | | | Introduction: Purpose: The purpose of this experiment is to use the Conductometric method to determine the critical micelle concentration of SDS. Materials and Equipment: * SDS- Sigma Aldrich‚ Lot: 38H0080‚ S/N: L-439‚ * NaCl- Food grade Great Value * SDS 20% solution- Fisher Biotech‚ S/N: BP1311-200‚ Lot: 468059 * Wave generator- Pasco Scientific‚ S/N PI-9587C * Ammeter- Keithley Auto-ranging
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Il bilancio – Strumento di analisi per la gestione 4/ed R. N. Anthony‚ L. K. Breitner‚ D. M. Macrì Copyright © 2008 – The McGraw-Hill Companies srl CAPITOLO 8 LE PASSIVITA’ E IL CAPITALE NETTO Problemi Problema 8-1 Laribee SpA a. (1) Including current liabilities.............. Debt/Equity Ratio $97‚920 = 66.7% $146‚880 Debt/Capitalization Ratio Rarely calculated this way. (2) Excluding current liabilities except current portion of long-term debt..... Excluding all current liabilities
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Sollutions CHAPTER 15 DISCUSSION QUESTIONS 1. FIVE PRIORITY SEQUENCING RULES ARE: First come‚ first served (FCFS); or First in‚ first out (FIFO): Jobs are sequenced in the order in which they arrive at the workstation. Earliest due date (EDD): Jobs are sequenced in the order in which they are due for delivery to the customer. Shortest processing time (SPT): Jobs are sequenced in order of the processing time required at the workstation‚ with the job requiring
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by the relative concentrations of water and dissolved substances inside and outside the cell. Water will move from an area of high concentration of water molecules (low concentration of dissolved particles) to an area of low concentration of water molecules (high concentration of dissolved particles). It is difficult to observe osmosis at the cellular level since cells are very tiny and can only be seen with a microscope‚ so you are going to use sticks of potato tissue in solutions that have different
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determine the concentration of acetic acid in white vinegar. 2.0 Theory The concentration is a measurement of relative amounts of solute and solvent. There are many diverse ways of expressing concentration but the most accepted and widely used is molar concentration and regularly referred to as molarity which is defined in mole‚ the amount of solute dissolved in one litre of solution. [pic] In this experiment there are solutions used with accurately known concentrations called standard
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Solute Concentration on the Mass of Apples Introduction Background: This lab involves the testing and measuring of water potential. Water potential (ψ) is the tendency of water to diffuse from one region to another. It measures the free energy available in water to do work. Pure water has a water potential of 0 (kpa--unit?). Water will move from an area of higher water potential to an area of lower water potential. Several factors‚ including temperature‚ pressure (ψp) and solute concentration (ψs)
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