we studied the kinetics of the reaction between Allura Red (C18H14N2O8S2) and bleach. C18H14N2O8S2 (aq) + NaOCl (aq) → products Allura Red is a food dye‚ which is an organic molecule with alternating single and double bonds. The color of the dye comes from the delocalization of electrons in the πbonding system (Exton‚ 149). Bleach is an aqueous solution that contains sodium hypochlorite (NaOCl). The hypochlorite of bleach breaks the double bonds of the food dye through oxidation‚ forming molecule
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Procedure Exercise 1: Food Safety Part 1 of 2 1) For this experiment items needed are: Two prepared agar plates‚ bleach‚ camera‚ two disposable cups‚ coffee mug‚ leaf of lettuce‚ two small containers of milk‚ hand soap‚ Isopropyl alcohol‚ permanent marker‚ paper towels‚ gloves‚ apron‚ safety goggles‚ face mask‚ four sterile swabs‚ and distilled water. 2) Disinfect the work area with bleach and paper towels. Then‚ wash hands with soap and water‚ put on the apron‚ as well as‚ the safety goggles‚ face
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fermentation‚ we repeated that procedure except instead of putting each fermentation tube into a certain temperature of water‚ we used the same temperature of water but each tube had a different amount of bleach in it. We put 0 drops of bleach in the first one and increased by 2 drops of bleach every tube‚ ending up with 10 drops in the sixth fermentation tube. We monitored the amount of
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Knowing how to wash clothes —without ruining them — is a basic life skill. Before you load up the washing machine‚ you have to do some prep work such as separating items by color and texture‚ choosing the right washing cycle‚ and knowing how much detergent to add. All this calls for just a little practice‚ but you’ll get the hang of it in no time. Separate and divide for laundry success Not all fabrics are made the same‚ so you need to create piles of items based on color and fabric type:
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bactericidal agents‚ bleach‚ hydrogen peroxide‚ and isopropyl alcohol‚ were tested. This was done by creating aqueous solutions of staphylococcus epidermidis bacteria and a chemical agent. The solutions were then incubated on an agar petri dish for 24 hours. The quantity of staphylococcus epidermidis bacteria colonies that were grown were used as an indicator of how effective each agent was in killing the bacteria. Each bactericidal agent has its own mechanism for killing bacteria. Both bleach and hydrogen
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Division of City Schools Manila‚ Philippines Victorino Mapa High School Amount of Hydrogen Peroxide Concentration to be applied in the Materials used in In-Office Bleaching Technique and Walking Bleach Technique Harvey D. Abdosan IV-OBB (Researcher) Ms. Luzviminda A. Dinglasan (Research Adviser) Introduction One of the problems of Filipino today is the yellowish teeth they have. Some of them are afraid to smile because they are ashamed of their teeth. Now is there any process that can
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contained. C. Independent Variables: antibacterial soap‚ household bleach‚ household disinfectant‚ penicillin‚ amoxicillin‚ erythromycin D. Dependent Variables: Hemophilus influenzae‚ Straphylococcus aureus‚ Streptococcus E. Control Variable: Sterile Filter Paper III. Hypothesis: If the most effective solution for pathogenic bacteria is household bleach‚ then the descending order from best to least are household bleach‚ Penicillin‚ Amoxicillin‚ Household Disinfectant‚ Anti-Bacterial Soap
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skinned and the only way to accomplish this is through the use of the skin bleach. They did not come to this conclusion by themselves. While watching the documentary Skin Bleaching Addiction‚ I noticed that the Nigerian men also showed a preference for the lighter skin women. The men in the documentary made comments about how they prefer a woman with lighter skin due to preference but they did not approve of the women that bleach their skin since these women “look like ghost or sickly”. Among African
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by adding drops of vinegar‚ bleach and ammonia to the controlled water. We found that the vinegar was the most effective and the quickest. The ending results were very interesting when being compared to our hypothesis and we learned that some chemicals can react faster than others and each contains a different level of concentration. HYPOTHESIS: For brine shrimp exposed to increasing concentrations of three chemicals‚ ammonia will have the highest LC-50 (toxicity)‚ bleach will have the intermediate
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Pos t-Lab Data Summary Note : some questions will display a variable like "nCount" or "SyInput" instead of an actual number in the data summary. Q# Question Text 5) Data Entry - No Scoring Enter the precise mass in GRAMS of the potassium iodate used to prepare your primary standard solution. Your mass precision should be reported to a thousandth of a gram‚ i.e. 0.302. (Use 3 significant figures.) Your Answer: 0.536 No Points Possible 6) Scoring Scheme: 3-3-2-1 If one had weighed out precisely
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