chips Distilled water Sodium chloride Sodium chloride (solid) Glass rod Measuring cylinder (25mL) Ethanol Watch glass Thermometer 100% Orange Juice 100% Apple Juice 100% Prune Juice Solder Fruit Scone Charcoal Copper(II) Chloride Magnifying glass Procedure A. Homogenous or Heterogenous 1. Examine 5 mixtures and record your observations in a table similar to the one drawn below 2. Classify the mixtures as either homogenous or heterogenous B. Solutions 1. The salt‚ sodium chloride‚ has a solubility
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Extracting NaCl from Rock Salt and assessing its purity Aim The aim of this experiment was to obtain a pure product from a solution through the processes o extraction‚ filtering and evaporation. Introduction Extraction is used when trying to separate or purify a product. For an extraction to be successful the substance used to make the solvent should readily dissolve. The substance used in this practical was rock salt. The liquid used should not react with the substance that needs extracting
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FORM 4G ELECTROLYSIS WORKSHEET TERM 3 2010-2011 1.Figure 1 below is a diagram of the apparatus used in the electrolysis of fused sodium bromide. Figure 1 a)Write the formulae for the ions present in the fused sodium bromide. b)Write an ionic equation to represent the reaction taking place at the positive and negative electrodes. c)When the heat source was removed‚ the crucible cooled and the lamp went out. Explain why the lamp went out when the crucible cooled. d)At the end of the experiment
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via the N or O gives rise to the term‚ linkage isomers and can affect the functionality of the complex with other molecules. To explore structural differences between complexes‚ pentaaminechlorocobalt (III) chloride‚ pentaaminenitritocobalt (III) chloride‚ and pentaaminenitrocobalt (III) chloride were synthesized and isolated. From the ultraviolet-visible spectrum‚ infrared spectrum‚ and molar conductivity each compounds was distinguished and characterized to show fundamental differences between the
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measured using a styrofoam calorimeter. The three reaction are shown below. Reaction 1: The dissolving of solid sodium hydroxide in water. NaOH(s) ---> Na+(aq) + OH-(aq) + heat Reaction 2: The reaction of solid sodium hydroxide with dilute hydrochloric acid. NaOH(s) + H+(aq) + Cl-(aq) ---> Na+(aq) + Cl-(aq) + H2O Reaction 3: The reaction of sodium hydroxide solution with dilute hydrochloric acid solution. Na+(aq) + OH-(aq) + H+(aq) + Cl-(aq) --->
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are divided mainly into two groups on the basis of physical and chemical properties – Metal and Non-metal. Metals: Part - I Physical Properties of Metals:- Hardness:- Most of the metals are hard‚ except alkali metals‚ such as sodium‚ potassium‚ lithium‚ etc. Sodium‚ potassium‚ lithium etc. are very soft metals‚ these can be cut using knife. Strength:- Most of the metals are strong and have high tensile strength. Because of this big structures are made using metals‚ such as copper and iron.
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Mannitol salt agar (MSA) plate – Mannitol is a carbohydrate that can be used by some bacteria as a nutrient. The use of mannitol is important in identifying Stapphylococcus species. Mannitol salt agar contains 7.5% sodium chloride (salt) whereas‚ most media contains about 0.5% sodium chloride. Organisms that cannot tolerate a high salt concentration will not grow on the plate. Staphylococcus species can grow in a high salt concentration. Mannitol positive organisms produce an acid when they grow. Staphylococcus
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solid in water. a. Put 1g of KCl (Potassium Chloride) in 10 ml water with an ignition tube at 10°C‚ then shake and observe the solubility of KCl. b. Heat the solution to 40°C and not higher‚ then stir and observe its solubility. c. Add another gram of KCl in the mixture‚ then stir and observe the solubility. Heat the mixture in an 80°C water bath then shake and‚ once more‚ observe the solubility of the KCl. d. Repeat the procedure with NaCl (Sodium Chloride). B. Effect of the polarity of the solute
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Abstract. This report is about how to standardize a Sodium Hydroxide (NaOH) solution by titrating it with pure sample of Potassium acid Phthalate (KHC8H4O4). This experiment has two sections. The first section is to standardize the Sodium Hydroxide by titration. Three sample of 0.7 – 0.9 g of solid KHP are place into each of the three numbered Erlenmeyer flasks. 50 ml of distilled water are added to each three of it from graduated cylinder and constantly shake it until the KHP solution are completely
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five drops of sodium sulfate in column 2A‚ 2B‚ and 2C. Place five drops of sodium hydroxide in column 3A‚ 3B‚ and 3C. Place five drops of sodium chloride in column 4A‚ 4B‚ and 4C. Record the color of a precipitate that has formed in the data table and “NR” if no precipitate has formed showing no sign of a reaction.Add a little water to each well and turn the well plate over on a paper towel. Throw the towel away and clean the plate. 1. H2CO3. 2. CaCl2 (aq)‚ H2CO3 (s). 3. Sodium Carbonate aqueous
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