General College Chemistry LabPaq / Published by: Hands-On Labs‚ Inc. sales@HOLscience.com / www.HOLscience.com / Toll Free 866.206.0773 A Laboratory Manual of Small-Scale Experiments for the Independent Study of General College Chemistry 50-0123-CK-02 LabPaq® is a registered trademark of Hands-On Labs‚ Inc. (HOL). The LabPaq referenced in this manual is produced by Hands-On Labs‚ Inc. which holds and reserves all copyrights on the intellectual properties associated with the LabPaq’s
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This experiment called for determining the salinity through mass. To determine mass‚ a small‚ cleaned watch glass was labeled with the sample number on the bottom using a permanent marker. The watch glass was weighed in grams. 2 mLs of the sodium chloride solution was pipetted into a 10 mL graduated cylinder that would be transferred to the watch glass. After this transfer‚ the watch glass and sample were reweighed and recorded. To figure out the mass of the solution‚ the plain watch glass
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indicated by a very pale pink color. To calculate the molarity of NaOH‚ the following equation was used MNaOH x VNaOH = MKHP x VKHP therefore the molarity was .125 M. INTRODUCTION This lab experiment covers the preparation of standard solution and the acid/base titration. The first part of the lab is to prepare a standard solution of Potassium hydrogen per. A standard solution is a solution of known concentration‚ in which it is prepared using exacting techniques to make sure that the molarity
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When the 54th Regiment heads down South‚ they are put under the command of Colonel James Montgomery. In this scene‚ the Union army‚ under Montgomery’s control‚ pillages Darien‚ Georgia‚ stealing valuables from within the houses‚ and eventually burning the town.16 Creighton’s essay‚ while about Confederate soldiers‚ is similar to this scene as the corruption of morality is exemplified in the description of “independent bands of horsemen… [who] used the Confederate invasion as an opportunity to terrorize
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not copper. The reaction of zinc metal with the hydrochloric acid (HCl) produces zinc chloride and hydrogen gas. Safety: Wear your safety goggles and apron If you spill Hydrochloric acid on yourself‚ rinse with water Procedure: DAY I 1. Take a post-1983 penny and‚ using a triangular file‚ etch an “X” on one side of the penny. Also etch a notch on the edge of the penny in the four positions shown in the diagram. 2. Mass and record the mass of the penny. 3. Using a graduated cylinder‚ measure 60.0 mL
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Lab 5 The Diffraction Grating Chinua McDonald Objective: To measure the wavelength of light with a diffraction grating. Theory: The two types of diffraction gratings are the transmission and reflection gratings. They are made by ruling on a piece of glass or metal a number of evenly spaced lines with a fine diamond point. Diffraction phenomena can be analyzed in terms of Huygens’ principle‚ according to which every point on the wave front of a wave should be considered as a source
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Moment of Inertia and Rotational Motion Garret Hebert PHY 2311 Tues 1:00 garret.hebert@hindscc.edu Abstract: During this lab we will study what rotational Inertia is and how different shapes of masses and different masses behave inertially when compared to each other. We will specifically study the differences of inertia between a disk and a ring. We will use increasing forces to induce angular acceleration of both a disk and a ring of a certain mass. We will then then measure the differences
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esterification reaction that was carried out in this lab is shown in figure 1. It worth mentioning that the by-product of such reaction is water. In organic chemistry‚ the reaction in which water molecule is released is known as condensation reaction (Hornback‚ 2006). Figure1 is drawn using Chem Sketch software. a) b) Figure 1: Typical Fischer esterification reaction (a) in comparison to the specific esterification reaction used in this lab (b) The reaction can also be categorized in terms of
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Grayland Martin Period 5 9/4/12 Laboratory 2 Report: Enzyme Catakysis 1. Title • The effect that temperature‚ pH‚ time‚ enzyme concentration‚ and substrate concentration has on Enzyme Catalysis. 2. Abstract • Assess the general functions and activities of enzymes. Analyze the relationship between the structure and function of enzymes. Understand the concept of initial reaction rates of enzymes. Change the temperature‚ pH‚ enzyme concentration‚ substrate
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Solubility‚ Crystallization and Melting Point Determination Post-Lab Discussion Guidelines: Part 2A and 2C: Draw tables (as in textbook) showing which combinations were soluble/miscible and which were insoluble/immiscible. Explain why this is so. Why are certain chemicals soluble/miscible when others are not? Part 3A: Calculate % recovery (this is not the same as % yield – see handout from the first day of lab if you’re confused)‚ and determine melting point of your product. Discuss % recovery
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