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A chemical reaction is defined as the interaction between different molecules.
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- For the nitrate reduction test, complete the table below Reaction Gas evolution (Yes/No) Color after adding reagents Color after adding zinc dust NO3 to NO2 NO3 to N2 NO3 to ammonia No reactionWhat is this used for? What do you call it? What is the chemical reaction occurring in there? What is the plate that is place inside the jar called? What is the indicator used for oxygen presence/absence? How did you know it worked?Reactants: Sodium Hydroxide (NaOH) Potassium Permanganate (KMnO4) Glucose (C12H22O11) What is the purpose of the sodium hydroxide in the redox reaction experiment?
- Which of the following reagents can be used in the reaction in the photo? A.) pyridinium chlorochromate B.) potassium permanganate C.) sodium dichromate with sulfuric acid D.) potassium chromate with sulfuric acidA sample was placed on a chromatography column. Dichloromethane was used as the eluting solvent. All the components were eluted off the column, but no separation was observed. What must have been happening during this experiment? How would you change the experiment to overcome this problem?Which of the following stains highlights iron deposits in cells? Question 10 options: A) Prussian blue B) LAP C) TRAP D) alpha-naphthyl butyrate esterase
- Which of the following best describes this reaction ? Choose one: O A. redox O B. condensation C. hydrolysisIdentify the oxidizing agent in the following REDOX reaction? CI2 + NaBr --> NaCI + Br2 A) NaCI B) NaBr C) CI2 D) Br2Please balance the following half-based reactions: SbH3 → Sb (acidic solution) BrO3- → Br2 (acidic solution) Cl- → ClO2- (basic solution) (PLEASE DONT USE H+ ION INSTEAD SUB H30+ )
- You must make a choice between two chromatographic systems for the analysis of a specific compound. System A shows a partition coefficient of 1.0 and system B a partition coefficient of 0.25. Explain which of the systems will elute your analyte the fastest. Give a full motivation of your answer?. A certain medium has the following composition: Glucose 15 g Yeast extract 5 g Peptone 5 g KH2PO4 2 g Distilled water 1,000 ml Tell what chemical category this medium belongs to, and explain why this is true. How could you convert Staphylococcus medium (table 3.6A) into a nonsynthetic medium? a. Name four categories that blood agar fits. Alpha hemolysis Beta hemolysis Gamma Alpha prime Name four differential reactions that TSIA shows. Observe figure 3.15. Suggest what causes the difference in growth pattern between nonmotile and motile bacteria. Explain what a medium that is both selective and differential does, using figure 3.18. a. What kind of medium might you make to selectively grow a bacterium that lives in the ocean? MSA Mannitol salt agar One that lives in the human stomach? Why are intestinal bacteria able to grow…The Keq for the reaction of water with water is called Kw H2O + H2O ⇔ H3O+1 + OH-1 [H3O+1][OH-1] Kw = ––––––––––––– = [H3O+1][OH-1] = (1 x 10-7)2 = 1 x 10-14 [H2O]2