The reaction order‚ based on the rate law‚ was first order with respect to crystal violet and second order with respect to OH-. The rate law was as follows: Rate law = k [CV]1[OH-]1 where k equaled 2.61. In order to determine the reaction order with respect to crystal violet‚ the graph that described the relationship between ln[CV] and time (seconds) was Figure 2. Not only did Figure 2 generate a more linear relationship‚ but it had the highest R2 value of 0.992 than ([CV] versus time) and ([1/CV]
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damaged‚ the red pigment will leak out into the surrounding environment. The intensity of color in the environment should be proportional to the amount of cellular damage sustained by the beet. To measure the color intensity‚ you will be using a Colorimeter or Spectrometer. In this device‚ blue light from the LED light source will pass through the solution and strike a photocell. The alcohol solutions used in this experiment are clear. If the beet pigment leaks into the solution‚ it will color the
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free 12V sealed lead acid batteries (2 off) of 4-7 year design life‚ 24 hour recharge period‚ low voltage cut off‚ thermal and reverse polarity protected. Current consumption 0.1A. Units should be mounted at least 30° above line of sight NOTE: Photometric data applies to single lamp only‚ two should be used and aimed separately in lighting designs. Dimensions: 280 x 130 x 280 mm Total power: 0.001 W Weight: 8.52 kg TLG_VOYT_F_TWINIP65.jpg 180° 150° 150° 120° 90° 120° 1200 800 400 90° 60°
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| [Solubility Product Constant] | Experiment 11 | | Molly McCabe | 4/18/2013 | | Data Tables: Part 1 and Part 2 Experimental Data: Standard | Calculated volume of copper sulfate in standards | Absorbance values | Blank | 0.0 mL | 0.0 | 1 | 1.25 mL | 0.094 | 2 | 3.75 mL | 0.065 | 3 | 2.50 mL | 0.099 | 4 | 3.50 mL | 0.129 | 5 | 5.00 mL | 0.187 | Collected Data | Test tube 1 | Test tube 2 | Test tube 3 | Test tube 4 | Test Tube 5 | Initial volume (mL) | 0.05
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Kinetics of the Harcourt-Essen Reaction Name: Manpreet Kaur Candidate Number: 7123 AS and A2 Aims: AS AIMS: 1. Investigate the effect of temperature on the rate of reaction. For this aim 3 sets of results will be obtained by timing how long it takes for the colour change to occur in different temperatures determined by the use of an electric water bath. With these results‚ the effect of temperature on the rate of reaction will be investigated. 2
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water and 100 was the freezing point. The scale was later reversed to the form it is today. In astronomy he made many observation of eclipses and made published catalogues of carefully determined magnitudes for a total of 300 stars using his own photometric system. His system was used by looking through glass plates at the star and keep adding plates until you can no longer see the light. This determined the magnitudes. The brightest star‚ Sirius‚ used twenty-five plates. Anders Celsius died of
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order of temperature of the water bath. Describe any relationship between the amount of pigment released from the beetroot and the temperature. g. If you have access to a colorimeter‚ set it to respond to a blue/ green filter (or wavelength of 530 nm) and note whether you are measuring absorbance or transmission. Check the colorimeter reading for distilled
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Aim: This experiment aims to determine what effect an increase in the surrounding temperature has on the plasma membrane of a typical plant cell structure. Hypothesis: An increase in temperature will damage and denature the plasma membrane and cause the cytoplasm and other substances contained within the membrane to leak out. Introduction: The purpose of a cell membrane is to control the transport of substances moving into and out of a cell. The membrane is an extremely thin layer (8 to 10 manometers
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correct to find the true mass of the planet o Transit method - As the planet transits in front of its host star‚ the observed flux (brightness) of the planet drops - The drop in the light varies with the size of the planet (small planet small photometric effect) - Allows to determine: estimate of mass Radius Atmosphere of the planet Planets temperature 4. Paper - Astrophysics/ astrobiology goal: find earth planet in habitable zone - Extraterrestrial life is carbon based and needs
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CORE BIOLOGY PRACTICALS You will need to know these practicals as the exam board may ask you questions based on them. Below is a summary of each one. Name of practical and independent & dependent variables Effect of caffeine on Daphnia heart rate Independent: caffeine concentration Dependent: heart rate of Daphnia Measuring the content of Vitamin C in fruit juice Independent: fruit juice Dependent: volume of juice required to decolourise 1cm3 of DCPIP The effect of temperature on cell membranes
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