Billy Kong Chem&163 Lab Report 1 Analysis of Acids‚ Bases‚ pH and Salt Purpose: Explore various methods for determining the characteristics of acid/base solution. The goal of this experiment include the investigation of various acid/base indicators‚ calculating the change of pH with concentration‚ change of pH due to the addition of salt and different between strong and weak acids/bases. Safety and Disposal: Use extreme caution when handling concentrated acids and bases. Dispose of all
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http://mskrao.weebly.com http://mskrao.weebly.com http://mskrao.weebly.com 1. INTRODUCTION In this busy world‚ minimizing the human effort and time is the ultimate aim of technology. It may be frustrating when a tired person gets into bed and remembers he had forgotten to switch the bed light off. The project ‘automatic night lamp with morning alarm’ helps avoid this problem by switching on an LED itself when it detects darkness in the room. The LED serves as a bed lamp or a reading lamp
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Background An indicator is a halochromic chemical compound that is added to a solution to determine its pH. It is a chemical detector for hydronium ions. The indicator changes colour to show the pH of the solution. Some indicates are not very precise and only tell us whether the solution is acidic or basic. When the indicator is added to the solution‚ they bind to hydrogen or hydroxide ions. The different electron configurations of the bound indicator cause the indicator ’s colour to change.
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The belt conveyor concrete mixing plant is the optimal equipment of large and medium construction sites js concrete mixer‚ water power‚ highway‚ harbor‚ bridge portable cement mixers‚ airport‚ large precast products plant and commercial concrete plants and so on. Henan Daswell Machinery Co.‚ Ltd‚is a professional manufacturer and trader specializing in the research‚ development and production of construction machinery for nearly 30 years. Our main products are as follows:commercial concrete batching
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Heat and Temperature: Compare and Contrast Introduction to Science - CSI 110 Katherine B. Williams-Robinson Strayer University Professor Valery Shemetov February 11‚ 2011 HTC 1 Abstract It is important to know the difference between heat and temperature. It will lead to a clearer understanding of energy. In this paper‚ I will define both terms and hopefully
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Continental Temperature Ranges Introduction: There are large variations in average monthly temperatures among cities located at the same latitude. This suggests that factors besides the angle and duration of isolation affect the rate heating and cooling of any given location. Objective: You will graph the average monthly temperatures of costal and inland continental regions and interpret the range in temperatures. Vocabulary: Temperature range- Average daily temperature Average monthly
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Investigating the effect of temperature on plant cell membranes The purpose of this activity is: • to practise experimental and investigative skills • to investigate the effect of temperature on cell membrane structures Procedure SAFETY: Always carry scalpels clasped to a tile and with the tip pointing away from you. Beetroot cells contain pigments called betalains that give the tissue its dark purple-red colour. The pigment is contained in the cell vacuole. Investigation
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CALIBRATION OF TEMPERATURE AND PRESSURE SENSORS Mechanical Engineering Department Loyola Marymount University Los Angeles‚ California ABSTRACT In this laboratory experiment‚ an Omega Model PX- 236-060GV piezoresistive pressure transducer was calibrated‚ by using an AMTEK model deadweight pressure tester. For the temperature calibration an Jofra Model C-140 temperature calibrator was used. The experiment began by setting up the Jofra Model C-140 temperature calibrator‚ and taking data from
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Lab Report Effect of temperature on enzyme activity I. Purpose: Determine how effect of temperature on enzyme (catalyse) activity (in the liver). II. Materials * Raw liver * Forceps * 50mL 1% hydrogen Peroxide (H * 25mL graduated cylinder * 50mL‚ 400mL beakers * Pureed liver * 5 Filter-paper disks * Paper towels * Timer or stopwatch * Thermometer * Hot plate III. Procedure 1.Gather all necessary materials; start
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butterflies need to regulate their body temperatures through thermoregulation. There are two types of ways to regulate body temperature. The first one is ectothermy. Ectothermic animals‚ or cold-blooded animals‚ rely on outside sources to heat or cool themselves. Cold-blooded animals can lie under the hot sun to heat themselves up and prepare for flight or to move around. However‚ if there is no source of heat‚ they are not able to raise their body temperature to the correct level for movement. Butterflies
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