What Effects Do Temperature And Standard Solution Have on a Beetroots Cell Membrane. Content: * Aim............................................................................................................. * Preliminary Work....................................................................................... * Hypothesis................................................................................................. * Risk Assessment.....................
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Determining the Molar Mass of a Volatile Liquid Purpose: The purpose of this lab was to find the molar mass of a volatile liquid. Data Table: Mass of Test Tube and Stopper (g) | 10.864 g | Barometric Pressure (mmHg) | 749.31 mmHg | Temperature of Boiling Water (C) | 97.1 C | Mass of Test Tube‚ Stopper‚ and Condensed Liquid (g) | 10.890 g | Volume of Flask (mL) | 9.90 mL | Calculations: 749.31 mmHG*1 atm760 mmHg= .98593 atm 9.90 mL*1 L1000 mL= .00990 L 97.1 C+273=370.1 K Substituting
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1. Start off by weighing two paracetamol tablets using some accurate scales. Record the mass down (1.15g). This had to be as accurate and precise as we could get it so we had the correct weight to start the experiment. Without this then the results we found at the end would not be accurate. A problem that could be faced with this is that the scales may not have been fully set to zero. Also it takes time for it to fully reach its weight on the reading so you may move them too quick before the right
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Introduction In a Grignard reaction‚ a Grignard reagent (R–MgX) adds to the carbonyl group in an aldehyde or ketone to form an alcohol (Figure 1). The reaction of a Grignard reagent with formaldehyde can be to synthesize a primary alcohol‚ with any other aldehyde can be used to synthesize a secondary alcohol‚ while the reaction with ketone is useful in the synthesis of a tertiary alcohol. Figure 1. General reaction mechanism of a Grignard Reaction The preparation of the Grignard reagent involves
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Christian Alliance Cheng Wing Gee College S4 Biology Practical Worksheet Name: _____________________________ ( ) Class: ________ Date: _______________ Practical 5.1 Detection of food substances by food tests In the space below‚ write down the procedures of all the following food tests: Results A Test for glucose using Clinistix paper Sample Clinistix paper Original colour Final colour Glucose solution Distilled water B Test for reducing sugars using Benedict’s test
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Can you make an egg bounce? Well the answer is yes‚ you make an egg bounce by using just a few steps. You can make this even more fun by doing this with a couple of friends. First you will need an egg. Then get a bowl. Also you will need vinegar. After you have all those here is what you will need to do. Boil the egg or eggs that you have. After you boil the egg let it set for at least an hour. Then set the egg in a bowl. When you have all that done just put vinegar in the bowl with the hard boiled
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Experiment1Separation of mixtures by filtration and crystallisationBackgroundThe separation of a mixture of two solids can often be achieved by filtration and crystallisation. To be successful‚ this requires that the components of the mixture have different solubilities in a particular solvent. AimThe purpose of this experiment is to separate sodium chloride/charcoal and sodium chloride/copper(II) chloride mixtures. Equipment requiredBalanceFilter funnel standFilter funnelBunsen‚ tripod and gauze
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Introduction Methyl Salicylate has been used for a long time for its pleasant odour and flavour. The objective of this experiment was to carry an organic synthesis; the preparation of salicylic acid from methyl salicylate. To do an organic synthesis‚ it is needed to chemically modify the molecules of another compound to end up with the desire compound. Methyl salicylate is the major constituent of wintergreen oil‚ which is why it was used in this experiment as the starting material. The new technique
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William son Eth er Synth esis Introduction In this reaction‚ an alcohol is deprotonated to form a good nucleophile‚ which then attacks the electrophile methyl iodide to form an ether. Tetrabutylammonium bromide‚ a phase transfer catalyst‚ is used to carry ions back and forth between the organic phase and the aqueous phase. OH O NaOH + NaI + H2O CH3I Before coming to lab‚ please review the following techniques: "Reluxing a reaction‚" "Extraction and washing‚" "Drying an Organic Solvent‚" "Evaporating
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UNIVERSITI TUNKU ABDUL RAHMAN Faculty : Engineering & Science Unit Code : UEME3213 Course : Unit Title : Heat and Mass Transfer Year/ Semester : Year 3/ Semester 2 Lecturer : Session : Experiment 2: Gaseous Diffusion Coefficient Objective To determine gas diffusion coefficient of acetone Introduction The knowledge of physical and chemical properties of certain materials is important because very often process engineering deal with the transformation
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