Joe Schmoe Period 3 March 8‚ 2013 Lab Report: Empirical Formula of Zinc Chloride (ZnCl) * Purpose The purpose of this experiment was to learn how to determine the empirical formula. Empirical means “based on experimental evidence.” * Experimental Design The reaction that occurred was the reaction of the elements Zinc (Zn) and Chloride (Cl) by mixing a piece(s) of Zinc and 50mL of Hydrochloric Acid (HCl). The amount of Zinc was determined to be between 1.00g and 1.25g. As the reaction
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39. The Viscosity of Liquids After studying the present lecture‚ you will be able to Define viscosity and viscosity coefficient Outline the method to measure viscosity using Ostwald viscometer Determine the average molecular weight of a polymer Determine the surface concentration of 1-butanol in aqueous solution Measure the distribution coefficient of a solute betweenn two solvents 39.1 Introduction Viscosity‚ one of the transport properties‚ arises because of intermolecular attractive and
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Chemical Report The chemical I will be writing this report on is oxygen. The name oxygen comes from the Greek word “oxygens‚” which means “acid producer”. Dictionary.com defines oxygen as “a colorless‚ odorless‚ gaseous element constituting about one-fifth of the volume of the atmosphere and present in a combined state in nature.” Oxygen has many uses today. First‚ oxygen is used by people‚ plants‚ and animals in the respiration process. Tanks of oxygen are used in the healthcare field to treat
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Lab Report 1: Natural Selection Introduction: In today’s lab we learned how natural selection and survival of the fitness took place in Darwin theory by testing it out with four different utensils which were Spoon‚ Fork‚ chopstick‚ and clothespin which represent the four different types of bird beaks. Our goal was to see which one utensil ( bird beak) would outcome the other four utensil ( bird beak) by being able to survive with the limit amount of food‚ the environmental chances‚ and see who
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trillions of cells that make up our bodies. The lungs also clean the blood of carbon dioxide waste created when cells use oxygen (Natural Geographic‚ 2012). In experiment one I hypothesize that the effect of respiration changes on carbon dioxide‚ concentration in exhaled air will be greatest the longer the respiration rate is increased. I predict that during normal breathing the time it takes to detect the carbon dioxide will be greatest.
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Assignments in Science Class X (Term II) 4 Carbon and its Compounds IMPORTANT NOTES 9. Unsaturated organic compounds : Organic compounds in which a double or a triple bond exists between two carbon atoms in a carbon chain‚ are called unsaturated organic compounds. 10. Hydrocarbons : Organic compounds which contain only carbon and hydrogen atoms are called hydrocarbons. 11. Straight chain hydrocarbons : Hydrocarbons‚ in which all the carbon atoms are linked to one another in a straight chain
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LYCOPENE EXTRACTION FROM TOMATO PASTE Introduction: Lycopene is a carotene because of its carbon and hydrogen composition. It is red in color and a member of the carotenoid family. Members of the carotenoid family play integral roles in plants. They use the absorption of light to aid in photosynthesis‚ and protect chlorophyll from damage. In humans‚ Lycopene acts as an antioxidant. Lycopene is found in various fruits and vegetables. The purpose of this experiment is the isolation of
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FOOD NUTRITION BASICS LABORATORY REPORT LAB 3 PROTEINS DUE DATE Next FNB Practical NAME (CAPITALS) ______________________________GROUP LETTER___________ This work is the product of my own efforts and has not been copied from any other sources except where full acknowledgement has been given. Signed________________________________________ Student No._____________ Introduction The principle involved in this experiment is denaturation. It involves loss of ordered structure and can be caused by changes
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Lab Report #1 Photosynthesis Lab Report: The Effects of Varying Concentrations of CO2 on the rate of Photosynthesis in Spinach Leaves Introduction Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct. The purpose of this experiment is to see how different concentrations of carbon
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EXPERIMENT 5 SEPARATION OF A MIXTURE INTO ITS COMPONENTS BY FRACTIONAL CRYSTALLIZATION Introduction: Fractional crystallization is one of the experimental techniques used to separate or purify mixture. Fractional crystallization makes use of the differences of solubility to separate the components of a mixture. Goals: Applying fractional crystallization to separate a mixture of salicylic acid and copper sulfate pentahydrate into its components. Calculate the percent of salicylic
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