will be an electrolyte‚ because they mostly break up into ions when in water. If the compound is molecular‚ then it will be soluble‚ it cannot be an electrolyte‚ and it can be an acid or base‚ because molecular compounds are soluble in organic solutions such as water‚ they do not have any delocalized electrons‚ and are not able to freely move. If the compound is an acid‚ then it will be both a molecular compound
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Laszlo Vass‚ Ed.D. Version 42-0027-00-01 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable
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Purpose: To find out the densities and to find out the name of the unknown metals. (Based on the extensive and intensive properties) Check up the words mass‚ volume‚ density‚ extensive properties‚ and intensive properties. Where do the units for mass and volume) come from and what do they mean? What is the density of distilled water? What is Archimedes principle? Does temperature affect the density of a solid? Liquid? Gas? Materials: Safety glasses‚ 10‚ 25 or 50 mL graduated cylinders
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I. Introduction: The purpose of this lab report is to differentiate between of Newton’s Third Law and Newton’s Second Law. Newton’s Third Law states that all forces come in pairs and that the two forces in a pair act on different objects and are equal in strength and opposite in direction. Newton’s Second Law states that the acceleration of an object is proportional to the net force and inversely proportional to the mass of the object being accelerated. Using calculation equations for acceleration
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Crystallization: Lab Report Theory/Introduction The purpose of this lab is to understand the concept of purification through crystallization. Crystallization is the process of purifying a substance‚ with the most adequate solvent. The process of crystallization came to be based on the principle of solubility. First‚ we must choose a solvent. The solvent is crucial to crystallization because it’s what will allow impurities to dissolve. Therefore‚ when selecting a solvent it is important that it
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decolorize from pink‚ because milk is slightly alkaline that change to pink after adding phenolphthalein. In order to enhancing the result and the colour‚ adding sodium carbonate is needed. Principle: The recommend rationale of the volume of enzyme (lipase) to sodium carbonate to substrate (milk) is 1:7:5. The purpose of adding sodium carbonate is to enhance the result of the experiment and to give an obvious change of the colour of phenolphthalein from pink to colour which indicated that the lipase
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The Kinetics of α-Chymotrypsin Introduction Chymotrypsin is a protease which cleaves proteins by a hydrolysis reaction‚ it does this by adding a molecule of water to a peptide bond. Although the hydrolysis reaction is thermodynamically favoured in the absence of a catalyst the half-life for a typical hydrolysis reaction by a protease is between 10 and 100 years‚ needless to say it is extremely slow1. Though this is true peptide bonds are hydrolysed within milliseconds in the body in the presence
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stirring allowing the formation of immiscible tiny droplets to form. After removing the aqueous layer and adding aqueous sodium bicarbonate solution to the organic layer an extraction is performed again. The second extraction should mainly consist of 2-bromohexane in the organic layer and water and the catalyst in the organic layer. The 2-bromohexane is dried using anhydrous sodium sulfate and then filtered to obtain 2-bromohexane. The product does not only contain 2-bromohexane‚ but there is still
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First hand investigation of the Dissolution of Solutes Background Information Molar heat of solution * The molar heat of solution of a substance is the heat absorbed when one mole of the substance dissolves in a large excess of water. It is expressed in kJ/mol. * The specific heat of water is a constant‚ with a value of 4.18 J/ g*oC. AIM: To determine the molar heat of solution for two different solids Equipment: * A calorimeter (made using 2 Styrofoam cups with a cardboard lid)
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Potato Osmosis and Diffusion Lab Report Emily Cocq Research Question: Will there be a difference in the experimented potato cores after being subjected to high concentrations of sugar? Introduction: Water can move through protein channels in cell membrane/cell walls. The water will move due to the water potential of the cells. If there is a greater concentration of solutes (chemicals) inside the cell than outside the cell and the chemicals can not move‚ then water will respond by moving
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