Katie Arrington 09/18/2012 09/19/2012 Title: Separation of Mixtures and Solids Purpose: The purpose of this experiment was to practice the process of separating mixtures of different solids. Procedure: This experiment consisted of different processes to separate a mixture of solids into the four individual solids: sand‚ benzoic acid‚ iron fillings‚ and sodium chloride. To remove the iron fillings from the mixture I used a magnet and scanned it across the entire mixture and the magnet
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experiment is to investigate the composition of compounds in Panacetin. Generally‚ it is made up of sucrose‚ aspirin and an unknown component‚ either acetanilide or phenacetin. SinceBy using different techniques‚ such as filtration‚ extraction‚ and evaporation‚ those three components have been isolated out‚ which is based on varies solubility and acid-based properties. The percentage of composition of Panacetin are also found‚ which is based on the mass of three dried components. The process: “panacetin”
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components‚ the separation purifying a liquid‚ distillation takes advantage of between the components have the same or the fact that the addition of heat to a liquid close boiling point levels. To get the greater speeds up its rate of evaporation which is a separations in such components‚ fractional endothermic change. Cooling a vapor favors its distillation is involved. In this procedure‚ the condensation which is an exothermic change. In vapor produced is brought into a
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sodium chloride and silica when in a mixture. When this experiment was performed‚ the percent composition of sodium chloride came out to be 47% and 53% of silica. Procedure: To start‚ weigh a dry evaporation dish to 0.01g. Next add 2-3 g of the sodium chloride and silica mixture to the evaporation dish and reweigh to ascertain the exact mass of the mixture. Then distilled water and a glass stirring rod need to be obtained. Using the distilled water‚ add 15-20 mL to the mixture and mildly stir
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Biology 1st Group Lab Report Objective: - To study the transpiration rate of a plant (Gou Qi) by using the bubble photometer. Assumption: - The rate of transpiration is equal to the rate of water uptake of the plant(Gou Qi) . Theory: |Independent Variable |Dependent Variable |Controlled Variable | |The environmental conditions: | Rate of water uptake by transpiration of the
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An integrated method is developed to utilize to a maximum extent the fresh biomass of seaweeds such as Kappaphycus alvarezii that can be crushed to release sap and where the sap is useful as a potent liquid fertilizer after suitable treatment with additives and dilution while the residue is a superior raw material for extraction of κ-carrageenan‚ thereby enhancing the value of the seaweed. Other advantages of the invention include a reduced drying time and drying area to obtain the raw material for
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TEACHER’S GUIDE CHEMISTRY TOPIC: OBSERVATIONS AND EXPERIMENTS USEFUL TIPS: Student’s experiments can be done in groups. Groups can be given different mixtures. Each group then carry out their own experiment‚ makes a write up of their procedure and presents to the rest of the class together with the samples obtained. UNIT 1: MIXTURES AND PURE SUBSTANCES This unit is suitable for senior one (S1) BRIEF DESCRIPTION OF THE UNIT: This unit deals with: • Methods of separating
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a. From 23 degrees to 28 degrees the slope of the line increases and shows a slight curve. The rate of evaporation increases with temperature since transpiration is a cooling mechanism to release heat. More stomata open as temperature increases as this allows a faster transpiration rate. Although‚ at much higher temperatures‚ plants close stomata to prevent excess water loss. b. The increasing humidity causes reduced transpiration rates. This is because atmosphere is saturated with water vapor
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oesophagus‚ from the mouth to the stomach. Emulsification: It is the hydrolysis of a few large fat globules into many small and soluble fat molecules. Transpiration: Transpiration is the loss of water vapour from the exposed parts of a plant; by evaporation from the leaves‚ stems and branches and by the escape of water vapour through the stomata. Respiration: Respiration is the breakdown of glucose molecules to synthesize(produce) energy.there are two types of respiration: aerobic respiration and
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available moisture (the opposite being a hydrophyte). There are some adaptations that are typical of xerophytes‚ usually to reduce the rate of transpiration: A thick waxy cuticle: By having this‚ the plant can limit the amount of water lost through evaporation. If there is little available; why lose what you have? Its shiny surface is also reflective with regards to light‚ keeping the leaf cool. For example‚ Lithops live in the deserts of South Africa‚ Namibia and Botswana. Sunken stomata: By sinking
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