Student provides Label or Box/Bag Qty 1 1 1 1 1 LabPaq provides Auxiliary Supplies BagCK1 © Hands On Labs‚ Inc. 1 1 1 1 1 1 1 1 1 1 1 LabPaq CK-1 Item Description Table salt Piece of string Isopropyl (rubbing) alcohol Tap water Paper‚ 5 cm x 5 cm for weighing chemicals Beaker‚ 100 mL‚ glass Cylinder‚ 25 mL 25-mL volumetric flask Pipet‚ Serological-2mL Bulb‚ Rubber Goggles-Safety Scale-Digital-500g Test Tube (1)‚ 13 x 100 mm Bolt‚ Metal – Small Magnet
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Respiratory Acidosis and Alkalosis Activity 1: Normal Breathing 1. At 20 seconds‚ pH = 7.4 2. At 40 seconds‚ pH = 7.4 3. At 60 seconds‚ pH = 7.4 4. Did the pH level of the blood change at all during normal breathing? If so‚ how? No‚ the pH level of the blood did not change during normal breathing. 5. Was the pH level always within the “normal” range for the human body? Yes‚ the pH level was always within the normal range for human body. 6. Did the PCO2 level change during the course of normal
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of Acetylsalicylic Acid Abstract Acetylsalicylic acid was prepared using salicylic acid and acetic anhydride. As a result‚ a white‚ powdery substance was formed (0.1931g‚ percent yield 91.30%) and was defined by melting point (124.5 – 134.5°C) and observation of color change with ferric chloride. Introduction Acetylsalicylic acid (aspirin) is one of the most popular analgesic drugs on the market today. It also acts as an antipyretic and anti-inflammatory drug. Salicylic acid itself was too acidic
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ESTIMATION OF 1-4‚ DIOXANE IN SHAMPOOS/ CONDITIONERS/HAIR CREAMS/ SODIUM LAURETH SULFATE BY HEAD SPACE GAS CHROMATOGRAPHIC TECHNIQUE INTRODUCTION 1-4‚ DIOXANE 1‚4-Dioxane is a heterocyclic organic compound‚ classified as an ether. It is a colorless liquid with a faint sweet odor similar to that of diethyl ether. The compound is often called simply Dioxane because the other Dioxane isomers (1‚2- and 1‚3-) are rarely encountered. CHEMISTRY OF 1-4‚ DIOXANE
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Nucleic Acid Structure & Function Charlotte V. Bañes‚ MD Department of Biochemistry Introduction ORGANISM Store and preserve information Pass information to future generations Express information during life’s processes GENETIC INFORMATION Coded along a polymeric molecule (DNA) the chemical basis of heredity Organized into genes units of DNA that encodes a protein or DNA Central Dogma of Molecular Biology Gene Expression & DNA Replication “The genetic information
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Exercise 10: Acid/Base Balance Worksheet Assignment Due: Week 1 Student instructions: Follow the step-by-step instructions for this exercise found in your text and record your answers in the spaces below. Submit this completed document by the assignment due date found in the Syllabus. Please make sure that your answers are typed in RED. Please type your Bobby Rivera and 4023166: Respiratory Acidosis and Alkalosis Activity 1: Normal Breathing 1. At 20 seconds‚ pH = 7.40
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1. Aim: To determine the weight-to-volume percent of acetic acid present in commercial vinegar and the weight-to-volume percent of ammonia present in window cleaners. Acid-base titrations can be conducted using the above samples against standardized aqueous NaOH and standardized aqueous HCl solutions respectively. 2. Introduction: Acetic acid‚ commonly known as ethanoic acid CH3COOH‚ is found in commercial vinegar. It is a weak organic acid that gives vinegar its characteristic pungent smell‚
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OIL PURIFICATION A SCIENCE INVESTIGATORY PROJECT CHAPTER I Background of the Study INTRODUCTION Oil used in cooking foods is commonly derived from vegetables. Cooking oil is commonly used for frying and oil used for frying is usually thrown away. The recycling of cooking oil also provides a form of revenue for restaurants‚ which are sometimes compensated by cooking oil recyclers for their used deep fryer oil. Cooking oil recycling also results in less used oil being disposed
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LAB REPORT FOR EXPERIMENT #2: PURIFICATION OF ACETANILIDE BY RECRYSTALLIZATION Your name TA’s name Your Partner’s name Lab Section OBSERVATIONS: A. SELECTING A RECRYSTALLIZATION SOLVENT | |Solubility Test (cold) |Solubility Test (hot) | |Water |insoluble |soluble | |pet ether |insoluble
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Acetylsalicylic acid is the active pharmaceutical ingredient in aspirin and can be synthesized by the esterification reaction of salicylic acid and acetic anhydride in the presence of an acid catalyst. An esterification reaction is when an acid is converted into an ester by combining with an alcohol and removing a water molecule. When heating the salicylic acid mixture in the warm water bath‚ the mixture should be removed from the bath within 8 minutes‚ to reduce the chance of the acetylsalicylic acid decomposing
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