Acid and Bases 1 Determining Acids and Bases SNC-2D1 April 02‚ 2013 Acid and Bases 2 Purpose The purpose of this chemistry lab is to investigate and find patterns/tendencies between substances Introduction An acid is a solution that has more free hydrogen ions (H + ) than hydroxyl ions (OH - ) and a pH less than 7. A base is a solution that has less free hydrogen ions (H + ) than hydroxyl ions (OH - ) and a pH of more than 7. In the late 1800s‚ the Swedish scientist Svante
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Lab #3: Stoichiometry of a Precipitation Reaction October 14‚ 2014 Abstract: The purpose of the lab‚ Stoichiometry of a Precipitation Reaction‚ is to be able to calculate the amount of a second reactant we need to react with the reactant one. You must calculate the amount of the second reactant using stoichiometry to figure out what amount is needed. After the amount is calculated‚ you then can add it to the first reactant and it will give you a full reaction. To figure out what you
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LAB: Substrate Concentration Affecting the Rate of Enzyme Activity: Through the Experiment of Beef Liver Puree and Hydrogen Peroxide Research Question Does different amount of substrate affect the rate of enzyme activities? Purpose To examine how different types of concentration (Hydrogen Peroxide) affect the rate of enzyme activity. Hypothesis We believe that if there is more substrate concentrated‚ then there will be an increase in the rate of enzyme activity. This is because
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Exercise 11: Blood Analysis: Activity 1: Hematocrit Determination Lab Report Pre-lab Quiz Results You scored 75% by answering 3 out of 4 questions correctly. 1. Hematocrit Your answer : a. refers to the percentage of white blood cells (WBCs) in a sample of whole blood. Correct answer: b. of 40 means that 40% of the volume of blood consists of RBCs. 2. A buffy coat layer You correctly answered: d. is all of the above. 3. The diagnosis of anemia indicates You correctly answered: a. a lower-than-normal
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EXPERIMENT 3 Name: Flame Tests & Electron Configuration Pre-Laboratory Questions and Exercises Due before lab begins. Answer in the space provided. 1. Write electron configuration for the alkali metals Li‚ Na‚ K‚ and Rb. Li ____He 2s1_____________________________________________ Na ____Ne 3s1______________________________________________ K _______Ar 4s1___________________________________________ Rb _______Kr 5s1___________________________________________ 2. Write the electron configuration
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BIOLOGY 181 Lab # 4 Microscopy and Cells Lab A microscope is a tool that enables us to see objects and organisms that are invisible to the naked eye. Microscopes use a series of two or more lenses to magnify an illuminated image. Magnification is a measure of how big an object looks to your eye compared to “life size.” Microscopes also enhance the resolution of an image. Resolution is the ability to distinguish between two objects that are close together. Resolution can be increased using immersion
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Chris Simmons August 21‚ 2014 IS3340 Egon Week 3 Lab 1. Enforce Password. This makes it so you cannot use the same password more than once or more than 10 times‚ etc. When you change your password‚ it cannot be the password you were just using. 2. No. This stores plaintext password. This can be a risk. It’s default “disabled”. 3. Store passwords using reversible encryption is required for certain remote access protocols. It is also required to VPN in most cases. 4. To be more secure‚ of
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Lab 3: Input‚ Processing‚ and Output This lab accompanies Chapter 2 (pp. 56-68) of Starting Out with Programming Logic & Design. Name: Rhamses Graterol Lab 3.1 – Pseudocode This lab requires you to think about the steps that take place in a program by writing pseudocode. Read the following program prior to completing the lab. Write a program that will take in basic information from a student‚ including their name and how many credits they have taken in Network Systems Administration program
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ASSAYING PLANT SUBSTANCES FOR ANTIBACTERIAL ACTIVITY PURPOSE To test plant extracts to see if they possess antibacterial activity. PROCEDURE First create a list of plant extracts being tested and choose 2 extracts per group. The plants being tested are Oregano‚ Tea tree‚ Eucalyptus and Colloidal Silver. Obtain two nutrient agar plates and using a permanent marker draw four quadrants on the bottom of each agar plate. Using a sterile pipet transfer 250 ml of E. coli broth to the middle of
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Virtual Lab Stimulation Exercise 3 Activities 1-5 Study online at quizlet.com/_cfevi 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. An action potential is an "all-ornothing" event. Explain what is meant by this phrase. This means that once the threshold is met‚ an action potential occurs. If the stimulus is too small an action potential does not occur. An action potential is usually initiated in an axon at or near what? The axon hillock‚ the initial segment‚ and the trigger zone. The adequate stimuli
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