Investigating the Osmosis Effect in Potato Cores Aim The aim of this experiment is to investigate the osmosis effect in potato cores while they are submerged in different concentrations of sucrose solution. Osmosis will take place while the potatoes are fully submerged in the sucrose solution. Apparatus æ Scalpel (1) æ Tile (1) æ Pr. Tweezers (1) æ 250ml Beakers (2) æ 100ml Water (Per Beaker) æ 100ml Sucrose Solution o 0.2M o 0.4M o 0.6M o 0.8M o 1.0M æ Measuring
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Lung Volume Activity The graph below is called a spirograph. It represents the amount of air that moves into and out of the lungs with each breath‚ as measured by a device called a spirometer. (The terms that are used to describe the features of a spirograph are explained below.) • Tidal volume is the volume of air that is inhaled and exhaled in a normal breathing movement when the body is at rest. • Inspiratory reserve volume is the additional volume of air that can be taken into the lungs
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In this study‚ three general media will be used for the detection of microorganisms on the equipment‚ personnel‚ raw materials and the finished goods. These are Potato Dextrose Agar (PDA)‚ Plate Count Agar (PCA) and Violet Red Bile Agar (VRBA) under the Univar brand. The amount of each prepared medium or dehydrated medium depends on the number of samples to be tested. PDA is usually used for the presence of yeasts
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Introduction The objective of this experiment is to combine Magnesium (Mg) with hydrochloric acid (HCl) to determine the molar volume of hydrogen gas (H2) (converted to the molar volume at STP) and then‚ to compare obtained results with the molar volume of an ideal gas. To determine the measured molar volume of hydrogen gas‚ we are going to use this equation: The molar volume of the ideal gas will be determined by the equation ‚ where T = 237 K‚ P = 101.3 kPa. The hydrogen gas will be collected
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Haileab Ghebrekiden‚ Lucille Emeruem‚ Shakira Thomas‚ Chris Thomas and Brad Steward 9/18/2014 Physics I Lab Dr. Abdalla Measurement of Length‚ Mass Volume and Density Introduction: All science is concerned with measurement. "MEASUREMENT" is the determination of the size or magnitude of something "Or" The comparison of unknown quantity with some standard quantity of the same rates is known as measurement. Due to this fact we have standards of measurement. Since the precision of all measuring
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type of application scanning or imaging human brain activity used a different approach. A study and experiment had been conducted to real subject in obtaining the real time result and brain mapping of the activity in human brain. Electric Capacitance Volume Tomography (ECVT) were used to measure electrical signals generated from human brain activity and reconstruct volumetric image of the brain signal in real time. ECVT is a method for determination of the dielectric permittivity distribution in the
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Data- A. Exploring Pressure-Volume Relationships Pressure (torr) | Volume (mL) | 1384.2 | 5 | 1198.1 | 6 | 1038.1 | 7 | 921.3 | 8 | 826.2 | 9 | 752.6 | 10 | 688.5 | 11 | 638.5 | 12 | 593.8 | 13 | 557.0 | 14 | 519.9 | 15 | 492.0 | 16 | B. Determining the Ideal Gas Constant Molar calculations: Mgs+2HClaq→MgCl2aq+H2(g) 5mL of 3M HCl nHCl=0.005L×0.3M1L=0.015mol nHCl 5×excess=0.0155=0.003mol nMg=0.0032=0.0015mol mMg=0.0015×24.31=0.0365g Volumes: * Tubing: Inner diameter=
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Practical 16: estimating Population Size Using Mark and Recapture Method Raw and Processed Data Table 1: Uncertainties of apparatus used in the experiment. Apparatus | Uncertainties | Stopwatch | ±0.01s | Table 2: Formulae and sample calculations involved in processing data in the experiment. Calculations | Formula | Sample Calculation | Mean ( x ) | x = 1n i=1naiWhere‚ 1. n refers to the total number of values. 2. ∑ refers to the addition of all values starting with the first value
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For the 30%‚ the change in temperature was very quick but plateaued at 25 degrees just as quick. For the 20%‚ the change in temperature was completed by around the 3rd-minute mark‚ so relatively fast before plateauing at 25 degrees. But the 3% took almost the whole 7 minutes to finish rising in temperature. So essentially‚ the higher the concentration of hydrogen peroxide‚ the faster the reaction will take place. Furthermore‚ the foam (water and oxygen produced by the potatoes catalase reacting
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In Echolocation: Volume Control by Amanda Tromans‚ she explains how some animals and machines use sound to locate things instead of using vision like others. For example‚ bats‚ dolphins‚ and submarines all do this but with a few differences. This paper is more like a review so it does not show specific steps. She explains in the beginning why those exactly use echolocation; this is basically the use of echoes and soundwaves. Those echoes and soundwaves are bounced off many objects so they can get
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