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    Diffusion Lab

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    Stacy Hernandez Period 1 Mrs. Riley AP Biology Osmosis and Diffusion Lab I. Introduction: Diffusion is vital to many life functions of a cell‚ it allow the transportation of vitally important nutrients and compounds without the expenditure of excess metabolic energy. To explain diffusion‚ it is as if a bottle of perfume is opened at one end of the room‚ then in a short amount of time a person at the other end of the room can detect the scent of the perfume; this is the process of diffusion

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    Titration Lab

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    The Mass of Acetylsalicylic Acid in Aspirin ------------------------------------------------- Purpose The purpose of the lab is to determine the mass of the ‘active ingredient’ in a commercial ASA tablet. ------------------------------------------------- ------------------------------------------------- Introduction There are three main theories surrounding acids and bases including the Arrhenius‚ Bronsted-Lowry‚ and Lewis theories. The Arrhenius theory of acids and bases states that

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    Lab 1

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    Lab 1 1. The white charge producer has a positive (+) polarity. The blue charge producer has a negative (-) polarity. 2. The positive charge builds significantly then remains as the charge producer is removed. 3. The negative charge builds significantly then remains as the charge producer is removed. 4. When the white charge producer is lowered then removed from the ice pail with out touching the positive charge builds then drops when the charger is removed. 5. When the ice pail

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    Osmosis Lab

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    The Effect of Osmosis on a Potato Cell October 12th 2012 Osmosis Lab Purpose: The purpose of this lab is to investigate the effects of osmosis on a potato cell as it is immersed for a period of time in solutions of different water concentrations. Hypothesis: If the potato is immersed into the distilled water‚ then it will be the heaviest out of the three. This is because water is at the lower is moving toward the area of higher concentration‚ which in this case is the potato. This

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    Stars lab

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    (inches or centimeters) Distance: ¾ full (inches or centimeters) A to B 3.5 5 9 13  A to C 4 4 9  13.5  A to D 3.5 5.5 12  17.5  B to C 4 4 8.5  13 B to D 2 2.5 5  7.5  C to D 3 3.5 5.5  10.5  Analysis: Answer the following questions in complete sentences. Include the answers in theAnalysis and Conclusion section of your lab report. 1. How does the density and distribution of your “stars” change as the balloon expands? When the balloon is not inflated‚ the “stars” are closer together. Thus‚ they

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    Cardiorespiratory Lab

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    Name_____________________ Section____________Date___________________ Lab Assessing Your Current level of Cardiorespiratory Endurance Cardiorespiratory endurance- is the ability of the body to perform prolonged‚ large-muscle‚ dynamic exercise at moderate-to-high levels of intensity. The 3-Minute Step Test I. How to Assess Your Cardiorespiratory endurance 1. Warm up before taking the test. Do some walking‚ easy jogging‚ and stretching exercises. 2. Practice stepping up onto and down

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    Leaf Lab

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    Use this document to report your findings from the LeafLab Exploration Experiment. The lab report consists of three sections: Data‚ Exploration‚ and Lab Summary. Data: copy any data‚ graphs‚ charts‚ or notes that you have saved in your LeafLab online notebook into this section. Exploration: Answer the questions. The questions in the Exploration section are the same questions in your LeafLab instructions. Lab Summary: Write a 100- to 200-word summary. Data To copy your data from your online

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    Lab 6

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    Lab 6 Experiment 2 1. It is important that bass caught and marked are returned to the lake unharmed because if they are harmed them they are less likely to be caught again or they may end up dying if they are returned harmed. 2. I don’t this type of population would be easier to count directly because I don’t think it would be possible to catch all of the bass in the population to conduct this experiment. 3. I think that sample size is relative to population density and will positively

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    Antifreeze Lab

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    points of water‚ 10% antifreeze‚ and 20% antifreeze utilizing an ice bath and a really cool thermometer. Apparatus Procedures Preparing the Ice Bath 1. Fill the tub ¾ full with ice. 2. Cover the ice with a respectable amount of salt. 3. Add water and stir that bad boy‚ the water should be standard temperature in a fwe minutes. Fill the test tube with any amount of water and submerge promptly *Check the test tube every few seconds until frozen. Record temperature. Repeat with both

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    Lab Report-

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    Student’s Name Date of Experiment- 11/27/12 Date Report Submitted 11/27/12 Title: Caloric Content of Food Purpose: to be able to measure the energy content of foods Procedure: We are going to take food items and burn them to heat water to be able to determine the amount of “energy” a food source can emit. Data Tables: |Data Table 1: Food Item - Observations

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