banks. The yearly flooding of the Nile enriched the soil and brought good harvests and wealth to the land. These days we use most of their daily life. Three most important things in Egyptian daily life were papyrus and writing‚ food and cookery‚ and cylinder seals. One of the important things in Egyptian daily life was papyrus and writing. Paper is made from the papyrus plant by separating it with a needlepoint into very thin strips as broad as possible. It was rare for a ancient Egyptian to be literate
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using potato tissue. Seven cups were set up‚ one as a control containing water and potato tissue‚ the other six with differing amounts of 1 M sorbitol stock solution and distilled water‚ and uniform cylinders of potato‚ in order to measure the gain or loss of water as an indicator of net osmosis. The cylinders were weighed‚ placed in their respective solutions‚ and weighed at 20-minute intervals to test for water loss or gain. Since the weight of the potato in the 0.4 M sorbitol solution did not change
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| Stage 2 Biology | | Adelaide High School | [Osmosis Practical Report] Abstract: | The purpose of this investigation is to see if the concentration of Sodium chloride (NaCl) solution will affect the mass of the potato cylinder hence the rate of osmosis. This can be done by placing 5‚ identical in length (3cm) but different in weight‚ tubes of potato in 5 different beakers. Each containing an altered NaCl concentration. The concentrations used in this experiment were‚ 0%‚ 2%‚
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1. Introduction When we say equilibrium‚ it is a state of balance. It is a condition where there is no change in the state of motion of a body. Equilibrium also may be at rest or moving within a constant velocity. A simple mechanical body is said to be in equilibrium if no part of it is accelerating‚ unless it is disturbed by an outside force. Two conditions for equilibrium are that the net force acting on the object is zero‚ and the net torque acting on the object is zero. Thus‚ the following objectives
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Measurements Volume of half filled graduated cylinder __12.5__mL Volume of completely filled small test tube __n/a__mL Number of drops in 1 mL ___14_drops Volume of the micro pipet __28__ drops _2___mL Step 6: Density Measurements Part A Mass of empty graduated cylinder _16.9_g Mass of graduated cylinder and water 21.1_g Net mass of the water __4.2_g Density of the water _0.84_ g/mL Part B Mass of graduated cylinder and alcohol _20.4_g Net mass of
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G. Prede D. Scholz Electropneumatics Basic Level Order no. Description Designation Edition Graphics Editors Authors Translation Layout 091181 E.PNEUM.GS.LBH. D.LB-TP201-GB 01/2002 D. Schwarzenberger Dr. F. Ebel G. Prede‚ D. Scholz Williams Konzept & Text OCKER Ingenieurbüro © Copyright by Festo Didactic GmbH & Co.‚ D-73770 Denkendorf 2002 The copying‚ distribution and utilization of this document as well as the communication of its contents to others without expressed authorization
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based on your data from your known samples. Reagents: None Equipment: Lead Copper Zinc Triple Beam Balance Graduated cylinder Unknown metal (Magnesium) Beaker Calculator Procedures Preparation: We observed the given equipment‚ and then placed 100 Ml of water into a graduated cylinder. Zinc 1. We then placed a sample of Zinc in the graduated cylinder. 2. The water level rose 4 ml. We subtracted the original 100mLof water from the 104mL of water with zinc in it. This gave us the
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intended to introduce the proper use of the most used laboratory equipments and glasswear that is come upon in the lab. As well‚ to determine the mass‚ volume and density of water by using various types of measuring glasswear‚ such as beakers‚ graduated cylinder‚ pipet‚ etc... The measurement of the density of water will determine the precision and accuracy of these measuring glasswear. Also‚ there will be a density calibration graph‚ used to determine an unknown value‚ prepared using NaCl solutions of known
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through the cube for each of these fields? 5. Examples of electric flux a. A positive charge inside a sphere b. A negative charge inside a sphere c. A positive and negative charge inside a sphere d. A cylinder in a uniform electric field e. A box next to a positive charge 6. The net electric flux through a closed surface is a. infinite only if there are no charges enclosed by the surface b. infinite only if the net charge enclosed
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The Effect of Temperature on Enzyme Activity and Oxygen Production Throughout this report you will gain information as to how temperature effects the amount of oxygen produced in an enzyme- catalase experiment. In the experiment we used liver extract as a catalase and created a chemical reaction within a reaction chamber between the catalase and hydrogen peroxide as well as three different controlled temperatures. In the procedure below there will be a step by step process as to how
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