Chapter 3 1. 1 atom of X = atomic mass (amu) 1 mole f X=atomic mass in grams 1 mole of something = 6.022 x 1023 units of that substance 1 mole of a compound =66.022 x 1023 atoms 6.022 x 1023 amu =1 g 2. What is the mass of 6 atoms of Fe? Answer: 6 atoms of Fe x 55.85 amu÷atom of Fe x 1 g of Fe÷6.022 x 1023 amu = 3. How many atoms does it take to make 1 g of Gold (Au)? Answer: 197.0 g Au =1 mole of Au
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reducing sugar.Example of the test that can be done is Benedict test. 1 In plant‚glucose is stored as the polysaccharide starch.Example of food that rich in starch is oat‚cereal‚rice and corn.Starch can be divided into two groups which is that is amylose and amylopectin. Natural starches are mixtures of amylose
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Chem 3418 Organic Chemistry Laboratory I Acid Base Review Definition In general‚ an acid is a substance that can donate a proton (H+) and a base is a substance that can accept a proton. Any proton in an organic molecule can potentially be donated. The most acidic proton in a molecule would be donated first. Any lone pair in an organic molecule can act as the proton acceptor. An acid (HA) reacts with a base (in this case H2O) to form the conjugate base of the acid (A-) and the conjugate acid of the
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does changing the temperature (°C) of glycerin affect the viscosity s -1 of glycerin (l)‚ when tested by dropping a marble from a constant height into the glycerin (l) and timed with a stopwatch until the marble hits the bottom? Design Independent Variable: The independent variable of this experiment is the temperature (°C) of the glycerin (l). Dependent Variable: The dependent variable of this experiment is the viscosity s -1 of the glycerin (l). Controlled Variable(s): The controlled variable(s)
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COURSE:BSC CHEMISTRY INDEX NUMBER:1025513 EXPERIMENT NUMBER:O.1.2.3 DEMONSTRATOR: BAIDOO DATE:23 RD JANUARY‚2014. TITLE: SEPARATION AND PURIFICATION OF ORGANIC COMPOUNDS AIMS: To isolate organic‚ inorganic and component from a given
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Whitney Miller Chemistry 111-D01L 3/31/2013 Calorie Content of Food Purpose: The purpose of this lab was to measure the energy content of three different food items using the change in water temperatures from the heat of the food. Procedure: 1. With your digital scale determine the empty weight of your 100-mL beaker. 2. Half-fill the beaker with water (approximately 50 ml) and weigh it again. 3. The beaker and water weight minus the empty beaker weight is the net weight of water
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Honors Chemistry Period 4 13 May 2012 Redox Reactions Lab Report We wished to investigate the oxidation number of a metal that would form aqueous ions when reacted with an aqueous nitrate salt. For this purpose‚ we chose to investigate the reaction of solid copper metal‚ in the form of a wire‚ with aqueous silver nitrate. Before we began the lab‚ we hypothesized that when silver nitrate‚ AgNO3‚ reacts with copper‚ Cu‚ the oxidation number of silver (Ag) ions that form will be +1. The unbalanced
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warmer Author: Jane Kim (B2) Partners: Jenny Kim‚ Jeffrey Heo‚ Eugenia Lee Experiment date: March 2‚ 2017 Table of Contents 1. Abstract 3 2. Introduction 3 3. Experimental details 4 3-1. Materials 4 3-2. Apparatus 7 3-3. Procedure 7 3-4. Special Precautions 8 3-5. Lab techniques 9 4. Results 9 5. Discussion 14 6. Conclusion 16 7. References 17 1. Abstract This lab report discusses an experiment to study thermodynamics and find ideal ionic compound to be used in hand warmer. Calorimetry experiment
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unk food is a derisive slang term for food that is of little nutritional value and often high in fat‚sugar‚ salt‚ and calories.[1][2][3] It is widely believed that the term was coined by Michael Jacobson‚ director of the Center for Science in the Public Interest‚ in 1972.[4] Junk foods typically contain high levels of calories from sugar or fat with little protein‚ vitamins orminerals. Foods commonly considered junk foods include salted snack foods‚ gum‚ candy‚ sweet desserts‚ fried fast food‚ and
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Student Mrs. Teacher Class Date Katie Limbach Mrs. Falk Chemistry 09-13-13 Title: Properties of Gases Purpose : The purpose of this lab was to learn about properties‚ both physical and chemical‚ of gases and to be able to identify them. Materials: Matches Toothpicks Pie tin Marker White Vinegar Hydrogen peroxide Measuring spoons Straw Tissue paper Baking soda Test tubes 24 Well Plate Pipet Stoppers for the test tube Chemicals provided by Labpaq Procedure:
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