General Chemistry Laboratory 151 Chemiluminescence Introduction: The objective of tis experiment was to carry out systematic series of experiments in order to determine which chemicals and which ratios of chemicals produce the brightest light. Also‚ this experiment will determine which chemical produces the longest light. Chemiluminescence is the emission of light (luminescence)‚ as the result of a chemical reaction. There may also be limited emission of heat. This occurs because the
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time. Because the trials were done systematically from one to the next‚ only one element of each trial was changed at a time‚making it easy to single out the defining factors. There were many chemicals used during this experiment including Luminol‚ bleach‚ DMSO‚ NaOH‚ HCl‚ and H2O2. On the second day of trials‚ the Luminol was chilled to test the effects this would have on the glow we obtained through chemical reactions. Results of Day 1: Table 1: Trial | Luminol (D) |
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sodium iodide and common bleach as the oxidizing agent in aqueous alcohol as the solvent. Balanced Chemical Equations: Physical Properties: Name of Chemical Chemical Structure Molar Mass (g/mol) BP/MP (ºC) Density (g/mL) Mass/Vol. Used Purpose 3-methoxy-4-hydroxybenzaldehye C8H8O3 152.1494 MP=81-83‚ BP=285 NA 0.1g Solute Ethanol CH3CH2OH 46.0688 MP=-114.1‚ BP=78.3 0.789 2.0mL Solvent Sodium Iodide NaI 149.8943 MP=661‚ BP=1300 3.667 0.117g Catalyst Bleach NaOCl 74.4422 MP=NA‚ BP=40dec
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strategic decisions that have changed the company dramatically in size and type of products offered. Clorox exited businesses that were not doing well (insecticides‚ bottled water‚ restaurant equipment) and built up its core brands with new products (bleach gel pen). Clorox used acquisition strategy to buy First Brands Corp. giving it a number of nationally known brands including the Glad line of plastic food and trash bags. [Learning Outcome 1.1: Explain why strategic management is important‚ Learning
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I used to bleach and dye my hair a different color every month when I was in high school. (my hair is hot pink and black in my senior picture) I have tried almost every semi-permanent metallic dye and that’s definitely what you see pictured above. The colors look like After Midnight Blue (dark blue)‚ Bad Boy Blue (light blue)‚ Hot Hot Pink (dark pink)‚ and Cotton Candy Pink (light pink)‚ all by M-P. I hope this helps. TOOLS: highlighting comb‚ clips‚ foils‚ color brush‚ hair bleach with the appropriate
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Learn about the basic biology of brine shrimp. Hypothesis In this lab I hypothesize that the most lethal household chemical is bleach and that is has the lowest LD50. Materials: ● ● ● ● ● ● ● ● ● ● ● 1000 ml beaker/2 gallon tank air pump air stone tubing eye droppers 10 ml pipettes graduated cylinders small petri dishes dissecting scopes/hand lenses beakers stopwatch live brine shrimp Lysol Bleach vinegar acetone (nail polish remover) Procedures: Place live brine shrimp in a small aquarium tank or a 1000ml beaker with an aerator
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and health profile of the things they buy. For example‚ Method says we should throw away the bleach‚ we don’t need bleach. Method says bleach is nasty stuff and doesn’t get your clothes clean; better yet we don’t need it to get our clothes clean. Method states that their technology in their product can get our clothes clean without bleach. This is a product we don’t need in our home. Method states that bleach and other surface cleaners contain all sorts of nasty chemicals that are toxic to breathe
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can slow the growth of‚ or kill‚ microorganisms. Hypothesis: The antiseptic that will prevent the growth of bacteria the most is iodine. The disinfectant that will prevent the growth of bacteria the most is bleach. Procedure: To begin the lab‚ turn the agar plate over and divide the plate into four quadrants and label the agar plate whether you used the E. coli or B. megaterium and number the quadrants 1 through 4. Please keep in mind that one pair will
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POSTLAB REPORT (65 pts) 1. State the objective(s) of the lab. (5 pts) • To analyze the effects of specific liquids on a variety of materials • To observe potential hazards • To investigate the effects of strong bases‚ strong acids‚ acetone and bleach on a variety of materials which include sugar‚ cotton‚ nylon‚ hair‚ polystyrene‚ egg white‚ egg yolk‚ and aluminum foil. 2. Give a summary of your observations for each of the experiments. (24 pts) Sugar + H2SO4 Black clumped substance formed
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including bleach‚ lemon juice‚ soda‚ and baking soda were used. There was also an unknown solution in which the pH level was used to determine which solution it was. The pH scale is 1-14‚ a pH of 7 is neutral‚ less than 7 is acidic‚ and greater than 7 is acidic. Materials: * pH strips * 20 test tubes * Disposable transfer pipettes * Indicators * Methyl Orange * Bromocresol green * Bromocresol purple * Phenol red * Solutions included * Bleach
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