Phuong Pham Prof. Johnson Lab 3 Gravimetric determination of Calcium as CaC2O4.H2O Feb‚ 27‚ 2014 I. Objective: The purpose of this lab is to determine how well gravimetric method measures the calcium level in a solution of known calcium concentration. II. Method: a) Overview: In this lab we will prepare 25 mL known concentration Calcium solutions. Then we will use Gravimetric method to determine the concentration of Calcium in each solution to figure out how well this method is. As we know
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Physical and Chemical Changes Say you are presented with two beakers‚ beaker A and beaker B‚ each containing a white‚ powdery compound. * a. From your initial observations‚ you suspect that the two beakers contain the same compound. Describe‚ in general terms‚ some experiments in a laboratory that you could do to help prove or disprove that the beakers contain the same compound. You may try some of the followings: * Dissolving in water * Dissolving in different chemical solution
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allow them to price their instruments lower than competitors‚ giving them a competitive advantage in the market. In today’s highly competitive markets‚ any advantage you can obtain over the competition should be exploited. Before looking over the calculations of NPV‚ IRR‚ and Payback
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1 This partial fill-in paper consists of 14 pages plus instructions for the completion of a mark-reading sheet. Read the following instructions CAREFULLY before answering the paper. The paper is divided into two sections: Section A and Section B. SECTION A Candidates must answer ALL the questions in this section. SECTION B In this section ALL the questions must be answered on the mark-reading sheet which is supplied. Carefully follow the instructions for the completion of the mark-reading
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2. Let us assume two students must prepare a presentation for their marketing class. As part of their class presentation‚ they must do a series of calculations and prepare 50 PowerPoint slides. It would take Larry 10 hours to do the required calculation and 10 hours to prepare the slides. It would take Kate 12 hours to do the series of the calculations and 20 hours to prepare the PPT slides. A. How much time would it take the two students to complete the project if they divide the two tasks equally
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and r is the radius of rotation 2. A car is driven around a circular track. Which would have a greater effect on the magnitude of its acceleration‚ doubling the speed or moving to a track with half the radius? Please show your proof or calculations. (1.0 point) A. Define centripetal force (F c) ? B. Which object is providing the centripetal force in this experiment? Ans: Cense acceleration is given by V2r doubling the velocity has a greater effect then dividing the radius
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SC155 – Mini-Project #3 Please remember to show all your work for the calculations in questions 1 and 2. These can be added at the end of this document (see Calculations Section). Complete the yellow shaded regions in the document below. Question #1 Antacid Volume NaOH used in back-titration (mL) Volume NaOH used in back-titration (L) Moles NaOH used in back-titration Maalox 24.1 mL 1.205 .001205 Tums 22.4 mL 1.00 .00112 Mylanta 20.0 mL 0.995 .001 CVS 19.9 mL 1.220 .0009995 Rennies
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Display converted currency | (output results to screen) | Main Module Display Module User Input Module Menu Module Calculation Module Control Flow Diagram—Main Control ------------------------------------------------- Begin Menu Module Quit ? Thank you for using the currency conversion program.” User Input Module Yes No Calculation Module Display Module End ------------------------------------------------- Control Flow Diagram—Menu Module
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Programming Solution Proposal PRG 211 Programming Solution Proposal As Head Coach of the Saint Joseph’s Catholic Prep School Knights basketball team‚ there is a constant need for developing players that have never played before and allowing experienced players the ability to compete to win. The dilemma that these two goals create is the balancing act that must be done in order to ensure both types of players are allowed to grow and develop but at the same time be able to compete for a championship
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DETERMINATION OF ZINC AND NICKEL CONCENTRATION BY (1) ION-EXCHANGE CHROMATOGRAPHY FOLLOWED BY CHELOMETRIC TITRATION‚ AND BY (2) ATOMIC ABSORPTION SPECTROSCOPY OF THE MIXTURE Experiment 4 Dates of Experiment: 10/14/08 through 10/30/08 Date of Report: 11/7/08 Chem 2262L � I. Introduction In this experiment‚ the zinc and nickel contents of unknowns were tested using two methods. In the first method‚ nickel and zinc were separated through ion-exchange chromatography and analyzed through chelometric
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