the water potential of plant tissue. This overall flow of water from a dilute area of high water potential to a more concentrated solution of low water potential across a partially permeable membrane is called osmosis. I predicted that the swede cylinders which are put in a test tube with a low potential of sucrose solution would become turgid because the water molecules that are present in the swede will move away from an area of higher potential of water molecules to an area that has a lower potential
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Title of the Experiment: determination of densities Introduction The density of a sample of matter represents the mass contained within a unit volume of space in the sample. For most samples‚ a unit volume means 1.0 ml. The units of density‚ therefore‚ are quoted in terms of grams per milliliter (g/ml) or grams per cubic centimeter (g/cm3) for most solid and liquid samples of matter. Density is often used as a point of identification in the determination of an unknown substance. The density
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aquifers or aquitards. MATERIALS * 3 cylinders (like a 500 mL graduated cylinder‚ but without graduation) * Sand * Clay * Gravel or pebbles * 3 20 mL colored liquid * timer PROEDURE Time allotment: 40 minutes 1. Label the cylinders as A‚ B and C. 2. Assign members of the group to be the timer and observer while somebody performs the activity. 3. Put sand in cylinder A‚ gravel/ pebbles in cylinder B‚ and clay in cylinder C. 4. When the timer is ready‚ pour
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INTRODUCTION 1 INTRODUCTION A fluid power system is one that transmits and controls energy through the use of pressurised liquid or gas. In Pneumatics‚ this power is air. This of course comes from the atmosphere and is reduced in volume by compression thus increasing its pressure. Compressed air is mainly used to do work by acting on a piston or vane. While this energy can be used in many facets of industry‚ the field of Industrial Pneumatics is considered here. The correct use of pneumatic
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Solving Problems Involving Prisms and Cylinders Focus on… After this lesson‚ you will be able to… solve problems involving right rectangular prisms‚ right triangular prisms‚ and right cylinders Danielle works at a toy store that sells remote control cars. She wants to fit 60 car boxes into a large crate. The car boxes have dimensions of 50 cm × 30 cm × 20 cm. The crate has dimensions of 140 cm × 120 cm × 110 cm. Predict whether all 60 boxes fit in the crate. How can you solve
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I have been asked to investigate the effects of osmosis on potato cell sap. I will test potato cylinders in different strengths of sucrose solution and record any results in a table. I will then analyse my findings and work out the isotonic point of the potato cell sap. Prediction I have looked at my scientific knowledge from the background theory I carried out and I will base my prediction upon this information. In this experiment‚ I expect the different concentrations to show fairly noticeable
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sampling of an LPG vessel. The inspector obtained hydrocarbon liquefied gas samples using two gas sample cylinders‚ commonly called ‘gas bombs’. These cylinders were delivered to a client’s laboratory for testing but the correct procedure for delivering the samples was not followed‚ partially because it had not been adequately communicated. Within a short time the bursting discs on the cylinders ruptured releasing the gas samples into the laboratory environment. If the releases had been close to
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graduated cylinder 4. Sink with running water 5. Ruler 6. A sample of zinc 7. A sample of tin 8. Electronic balance 9. Pencil/ pen and tables
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4.3 (b) To investigate the effect of pH on the rate of catalase activity Teacher Notes Apparatus required per class group of 24 students Chopping board 12 Knife 12 Weigh boats 12 100 ml Graduated cylinders 36 Boiling tube 36 Syringe 12 Electronic balance 3 Dropper 12 Timer 12 Labels 36 Thermometer 12 Water bath 3 Enzyme source eg. Radishes/celery Hydrogen peroxide Range of buffer solutions pH paper Washing up liquid Disposable gloves The apparatus
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HYDRAULIC BRAKE SYSTEMS AND COMPONENTS FOR OFF-HIGHWAY VEHICLES AND EQUIPMENT David E. Keyser Applications Coordinator Keith Hogan OEM Sales MICO‚ Inc. 1911 Lee Boulevard North Mankato‚ MN U.S.A. 56003-2507 Fax: +1 507 625 3212 Tel: +1 507 625 6426 ABSTRACT This paper will identify some prerequisites for brake actuation circuit design‚ describe three basic types of brake actuation circuitry‚ and will point out some common problems to be avoided in brake actuation circuit design for off-highway
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