actual conduct of experiment. Materials: A. Chemical Reagents: a. Sugar b. Water c. Food Colorant B. Equipment a. Triple Beam Balance C. Glassware a. (4) test tube b. (4) glasses c. (1) petri dish d. (1) funnel e. (1) 10mL graduated cylinder f. (1) 100mL graduated cylinder g. (1) beaker h. (1) glass stirrer) Precautions: 1. Always wear safety goggles and lab gown during the laboratory period. 2. Take extra care in handling glassware and weighing equipment. 3. Do not taste‚ inhale or play with the
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2. Right-click (PC) or Command-Click (Mac) on the table and select print. Part I: Density of Unknown Liquid | | Trial 1 | Trial 2 | Trial 3 | Mass of Empty 10 mL graduated cylinder (grams) | 25.50 | 25.50 | 25.50 | Volume of liquid (milliliters) | 8.10 | 8.30 | 8.10 | Mass of graduated cylinder and liquid (grams) | 35.50 | 36.00 | 35.50 | Part II: Density of Irregular-Shaped Solid | Mass of solid (grams) | 38.285 | 42.345 | 42.577 | Volume of water (milliliters) | 51.00 |
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Steam Engines A steam engine is a heat engine that performs mechanical work using steam as its working fluid. Using boiling water to produce motion goes back about 2000 years‚ but early devices were not practical. Since the late 1700’s steam engines have become a major source of mechanical power. The first steam-powered devices were used to pump water out of mines. In 1781‚ James Watt patented a steam engine that produced continuous rotative motion. These engines enabled a wide range of
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of light through the solution. Equipment: 20 ml of 0.00100 molL-1 potassium permanganate 20 ml distilled water 6 identical test tubes 1 Test tube rack 1 plastic pipette 10 ml measuring cylinder Photometer Method: 1. Measure 5 ml of potassium permanganate with the measuring cylinder‚ place this into the 1st test tube. Then measure 2 ml of distilled water with a plastic pipette‚ also place in the 1st test tube. Stir the solution gently with the pipette to ensure that the potassium
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Ralph Ellison an American novelist‚ literary critic‚ and scholar is best known for his novel Invisible Man‚ which won the National Book Award in 1953. A story of a black man and college- educated stuck in a vendetta between a racially divided society‚ trying to overcome and succeed in the stigma that a black man is simply invisible. The novel follows The Invisible Man’s through a journey “from Purpose to Passion to Perception” (Ellison)‚ by introducing series of flashbacks taking the form of dreams
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Enzyme Lab 6 03/13/2013 Report by Mary Jo Anthony I. Introduction II. Materials and Methods III. Results IV. Conclusion and Discussion Introduction Background Information: This lab allowed us to study chemical reactions and how catalysts will affect the rate of these reactions. The reaction we studied is the breakdown of hydrogen peroxide to water and oxygen and it is vital to life. The molecule hydrogen peroxide is a molecule that is toxic
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called split tensile strength of concrete. The size of cylinder is 300mm length with 150mm diameter or 200mm with 100mm diameter. The specimen were kept in water for curing for 3 days‚ 7 days and 21 days and on test day remove and allow the surface to dry. The test is performed out by placing a cylindrical specimen horizontally between the loading surfaces of a compression testing machine and the load is applied until failure of the cylinder along the vertical diameter occurs‚ record the maximum
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Different Types Of Air Compressors. written by: sriram balu • edited by: Lamar Stonecypher • updated: 2/24/2010 Though the reciprocating air compressor is the most commonly used one‚ there are also many different types of air compressors which are used in various industries. Get the insight about the reciprocating air compressor and rotary compressors like screw‚ lobe‚ vane and scroll compressors. Introduction: The usage of compressed air is not limited only to industries‚ but they are also used
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temperature on enzyme activity Hypothesis: As the temperature deviates from 40°C the activity will lower Equipment: – Chemicals: – Milk – Junket tablets – Hot water – Ice – Test tubes – Stopwatch – Measuring cylinder Risk Assessment: |Hazard |Risk |Prevention | |Hot Water |Hot water splashing or spilling on |Safety glasses and aprons were worn
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Sonia St James Investigation: Factors that affect the outcome of enzyme activity Introduction In this project I will monitor the rate of activity of Catalase. Catalase is an Enzyme which in the right conditions catalyses the decomposition of Hydrogen Peroxide into water and oxygen; 2H2O2 + Catalase >>> 2H2O + O2 Catalase is found in all cells and protects them from Hydrogen Peroxide which is a dangerous waste product that needs to be eliminated. Without Catalase living things could not survive
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